Gluten Cross-Reactivity UPDATE: How your body can still think you’re eating gluten even after giving it up.

March 13, 2013 in FAQ, FAQ, Foods in Moderation, Gut Health, The Autoimmune Protocol, The WHYs of the AIP

The Paleo Approach by Sarah BallantyneIn my research for The Paleo Approach, I feel that it is important to provide scientific references for every single statement I make.  This has me doing a great deal of fact checking, scouring the medical literature to verify information often gleaned from other paleo authors and bloggers.  Most of the time what I find out just helps reinforce concepts, filling in blanks, and typically making a strong case for my assertions.  But, every once in a while, I find information that makes me completely reevaluate a concept and sometimes even an aspect of the autoimmune protocol.

The update for this blog post comes from my further examination into the science behind gluten cross-reactivity.  While there are plenty of papers confirming how cross-reactive antibodies can be formed, I could not find any published studies confirming the results from Cyrex Labs (and my motto with the paper is if I can’t cite it, I don’t say it).  I contacted the company to request further information (I was particularly interested in the reported cross-reactivity to tapioca as I was trying to decide whether or not tapioca starch and/or pearls should be included in The Paleo Approach).  Cyrex labs responded quickly and informatively and my level of esteem for that company (which was high to begin with) elevated another couple of notches.  While they were unwilling to share proprietary data with me, they were able to point me to a recent publication that evaluated gluten cross-reactivity and share a summary of their proprietary findings (the paper did not show up on my PubMed searches).  As I devoured the paper (figuratively, not literally), I realized that an update to this post was required.  This is not an excerpt from The Paleo Approach but it is a direct result of my research for the book and much of the information that follows is still presented in it.

For those 20% of us with celiac disease or gluten-intolerance/sensitivity (whether diagnosed or not), it is critical to understand the concept of gluten cross-reactivity. Essentially, when your body creates antibodies against gluten, those same antibodies also recognize proteins in other foods. When you eat those foods, even though they don’t contain gluten, your body reacts as though they do. You can do a fantastic job of remaining completely gluten-free but still suffer all of the symptoms of gluten consumption—because your body still thinks you are eating gluten. This is a very important piece of information that I was missing until recently.

Proteins are made of long chains of amino acids (small proteins may only be 50 amino acids long whereas large proteins may be 2000 amino acids long) and it is the specific sequence of these amino acids that determines what kind of protein is formed. These amino acid chains are folded, kinked and buckled in extremely complex ways, which gives a protein its ‘structure’. This folding/structure is integral to the function of the protein.

An antibody is a Y shaped protein produced by immune cells in your body. Each tip of the Y contains the region of the antibody (called the paratope) that can bind to a specific sequence of amino acids (called the epitope) that are a part of the protein that the antibody recognizes/binds to (called the antigen). The classic analogy is that the antibody is like a lock and a 15-20 amino acid section of a protein/antigen is the key. There are 5 classes (or isotypes) of antibodies, each with distinctive functions in the body. The IgE class of antibodies are responsible for allergic reactions; for example, when someone goes into anaphylaxis after eating shellfish. The two classes IgG and IgA are critical for protecting us from invading pathogens but are also responsible for food sensitivities/intolerances. Both IgA and IgG antibodies are secreted by immune cells into the circulation, lymph, various fluids of the body (like saliva!) and tissues themselves. And both IgG and IgA antibodies are found in high concentrations in the tissues and fluids surrounding the gut (this is part of why the gut is considered our primary defense against infection).

The formation of antibodies against an antigen (whether this is an invading pathogen or a food) is an extremely complex process. When antibodies are being formed against a protein, the antibodies recognize specific (and short) sequences of amino acids in that protein. Depending on how the antigenic protein is folded, certain amino acid sequences in that protein are more likely to be the target of new antibody formation than others, simply because of the location of that sequence in the structure of the protein. Certain sequences of amino acids are more antigenic than others as well (i.e., more likely to stimulate antibody formation). This is also part of why certain foods have a higher potential to cause allergies and sensitivities.

Understanding that antibodies recognize short sequences of amino acids and not an entire protein is key to understanding the concept of cross-reactivity (and molecular mimicry, but that’s a topic for another post). It also is the reason why many different antibodies can be formed against one protein (this redundancy is important for protecting us from pathogens). Many different antibodies can also be formed against one pathogen or, more relevant to this discussion, one specific food.

So what happens in cross-reactivity? In this case the amino acid sequence that an antibody recognizes is also present in another protein from another food (in the case of molecular mimicry, that sequence is also present is a protein in the human body). There are only 20 different amino acids, so while there are millions of possible ways to link various amount of each amino acid together to form a protein, there are certain amino acid sequences that do tend to repeat in biology.

The take home message: depending on exactly what antibody or antibodies your body forms against gluten, it/they may or may not cross-react with other foods. So, not only are you sensitive to gluten, but your body now recognizes non-gluten containing foods as one and the same. Who needs to worry about this? Any of the estimated 20% of people who are gluten intolerant or have celiac disease, i.e., have formed antibodies against gluten.

A recent study evaluated the potential cross-reactivity of 24 food antigens.  These included:

  • Rye
  • Barley
  • Spelt
  • Polish Wheat
  • Oats (2 different cultivars)
  • Buckwheat
  • Sorghum
  • Millet
  • Amaranth
  • Quinoa
  • Corn
  • Rice
  • Potato
  • Hemp
  • Teff
  • Soy
  • Milk (Alpha-Casein, Beta-Casein, Casomorphin, Butyrophilin, Whey Protein and whole milk)
  • Chocolate
  • Yeast
  • Coffee (instant, latte, espresso, imported)
  • Sesame
  • Tapioca (a.k.a. cassava or yucca)
  • Eggs

They did not find cross-reactivity with all of these foods (as is implied by the Cyrex Labs gluten cross-reactivity blood test, a.k.a. Array 4).  But, they did find that their anti-gliadin antibodies (antibodies that recognize the protein fraction of gluten) did cross-react with all dairy including whole milk and isolated dairy proteins (casein, casomorphin, butyrophilin, and whey)—this may explain the high frequency of dairy sensitivities in celiac patients—oats, brewer/baker’s yeast, instant coffee (but not fresh coffee), milk chocolate (attributable to the dairy proteins in chocolate), sorghum, millet, corn, rice and potato.

While not all people with gluten sensitivities will also be sensitive to all of these foods, they should be highlighted as high risk for stimulating the immune system.   Just like trace amounts of gluten can cause a reaction in at least those with celiac disease (the threshold for a reaction has not been tested in non-celiac gluten sensitivity), even a small amount of these foods can perpetuate inflammation and immune responses. This is important when you think of the small amounts of corn used in so many foods and even the trace milk proteins that can be found in ghee.

Beyond this gluten contamination is common in the food supply and many grains and flours that are inherently gluten free may still contain gluten once processed.  Commonly contaminated grain products include millet, white rice flour, buckwheat flour, sorghum flour, and soy flour.  As these are commonly used ingredients in commercial gluten-free baked goods, extreme caution should be exercised.

Cyrex Labs offers a simple blood test that is referred to as their gluten ross-reactivity panel, a.k.a. Array 4.  It tests for reactions to the gluten cross-reactors mentioned above as well as the non cross-reactors evaluated in the paper.  Cyrex Labs reported to me that they see positive sensitivities frequently (many as high as 25%) in many of those foods in people with diagnosed gluten sensitivity.  This may reflect that when you have a leaky gut, food intolerances are quite easy to form.

If you have autoimmune disease (which has a very high correlation with gluten-sensitivity), celiac disease, gluten-sensitivity, or are simply not seeing the improvements you were hoping for by following a standard paleo diet, one or all of these foods may be the culprit. You have the choice of either cutting these foods out of your diet and seeing if you improve or get tested to see if your body produces antibodies against these foods.

When I first wrote this blog post, it made so many pieces of the puzzle come together.  I stopped eating chocolate (I had already given up coffee), fermented foods like sauerkraut and kombucha (because of the yeast content), eggs, and tapioca.  Over the months that followed, I was able to definitely discern that I am very sensitive to chocolate (perhaps because it is extremely high in phytic acid, discussed in this post) and eggs (discussed in this post).  I have successfully reintroduced fermented foods and have not been particularly inspired to test my sensitivity to tapioca (I test by eating a bit and seeing if I have a reaction, most typically my reactions are acne, but sometimes trouble sleeping, mood issues, joint aches, or increased itchiness and redness of my lichen planus lesions).  So, will I give coffee a try now?  Maybe, once in a while as a special treat, but removing gluten cross-reactivity from the list of ways coffee is suboptimal, really only removes one potential problem.  Coffee still has effects on cortisol and still correlates with increased inflammation.  Oh well.  Whether I can drink coffee again or not, I am glad to be able to share this updated information with all of you!

A great overview of proteins and antibodies (and source of protein folding image): http://publications.nigms.nih.gov/structlife/chapter1.html

A fairly technical review of food IgG-mediated food sensitivities: http://www.usbiotek.com/Downloads/information/criticalReview.pdf

Cyrex Labs Array 4: http://www.cyrexlabs.com/CyrexTestsArrays/tabid/136/Default.aspx

Image of antibody binding taken from http://classes.midlandstech.edu/carterp/Courses/bio225/chap17/ss2.htm

A. Vojdani and I. Tarash, “Cross-Reaction between Gliadin and Different Food and Tissue Antigens,” Food and Nutrition Sciences, Vol. 4 No. 1, 2013, pp. 20-32.  http://www.scirp.org/journal/PaperInformation.aspx?PaperID=26626

Thompson T et al. Gluten contamination of grains, seeds, and flours in the United States: a pilot study. J Am Diet Assoc. 2010 Jun;110(6):937-40. doi: 10.1016/j.jada.2010.03.014.

Puerto Rican-Inspired Green Plantain Mash (Mofongo)

November 24, 2012 in Side Dishes, Starchy Staples, Veggies

Mofongo is a traditional fried plantain-based dish from Puerto Rico. It is typically made with fried green plantains mashed together in a wooden mortar and pestle, with broth, garlic, olive oil, and pork cracklings or bits of bacon. It is often filled with vegetables, chicken, crab, shrimp, or beef and is often served with fried meat and chicken broth soup.

This version of mofongo is a fantastic paleo mashed potato replacement.  Delicious and starchy, but also with a relatively neutral flavor, it would go well beside just about anything.  I would even fry up leftovers with eggs for breakfast.

I must thank Gloria for sending me the base recipe for Cuban kufu (and her suggested modifications for mofongo) for me to work from to put together this absolutely awesome starchy side dish.  You will not miss mashed potatoes any more! (As an aside, kufu is the same dish made with ripe plantains.  It has a very different flavor, but worth a try if you’re like me and are on a plantain kick! The only difference is that the ripe plantains don’t take as long to cook.)

Green plantains are fairly starchy, but if you can handle starches then this recipe is AIP-friendly.

Ingredients:

  • 3 green plantains (also called raw bananas)—the greener, the better!
  • 6 oz bacon
  • 1 medium yellow onion
  • 4 cloves garlic
  • (extra bacon grease, lard, or butter may be used to make a thinner mash)
  1. Peel plantains and cut into 1” semi-circles.  I made that sound too easy.  Peeling green plantains can be an exercise in frustration.  Cut in half lengthwise and then in half crosswise.  Get your thumbs under the peel and pry off.  If the peel breaks, use a paring knife to cut off whatever is stuck on.
  2. Place plantains into a pot with 2” of water.  Bring to a boil over high heat and then reduce to maintain a simmer.  Simmer covered until plantains are tender when pierced with a knife, about 20 minutes.
  3. Meanwhile, cut bacon into small pieces (I like a pair of scissors for this job).  Dice onion finely and finely chop garlic.
  4. Add bacon to a cold frying pan then turn on the heat to medium high.  Cook bacon 5 minutes, then add onion and garlic, stirring occasionally.  Continue cooking until bacon is crisp and onion is soft and caramelized.
  5. Drain plantains when they are finished cooking, but keep the cooking liquid! (I like to drain into a large pyrex measuring cup).
  6. Add ½ cup cooking liquid back to the plantains.  Mash with a wire potato masher to your desired consistency.  Add bacon, onion, garlic and all of the grease from the pan.  Stir to incorporate.
  7. If you like a thinner mash, you can either add more of the cooking liquid or you can add additional bacon grease (or substitute lard or butter).  Mofongo tends to get thicker as it sits, so if you have any leftovers, you will likely want to add some liquid to them before reheating.
  8. Enjoy!

The Science and Art of Paleofying—Part 1 Paleo Flours

November 15, 2012 in Baking Ingredients, Cooking Tips

Paleofying is often used as a derogatory term to describe the process of adapting Neolithic foods, typically desserts and sweet treats, to use only paleo-approved ingredients.  While some people look down on this practice as not addressing the problems of excess carbohydrate consumption and food addiction, I look at it as an important tool—it is a powerful strategy for making paleo accessible and sustainable for the general public.  Eating a restricted diet is much easier when you feel like you can still have birthday cake, can still celebrate a job promotion with a special dessert, can still bring cookies to your kid’s bake sale, can still make pancakes for Sunday brunch, and generally still get to eat delicious foods.  Paleofied baked goods mean that having a treat won’t damage your gut, cause rampant inflammation, or create a cycle of food cravings.  I like the word paleofy.  To me, this represents the union of nutrient-rich, anti-inflammatory “old” foods and modern life.

As we start the lead up to the holiday season, many of us are looking at conventional holiday baked good recipes and wondering how easy those recipes would be to adapt to paleo ingredients.  Yep, I’m doing this too.  Whether these are family favorites or recipes that just look delicious off of pinterest or in magazines, the first step to paelofying is deciding what recipe to start with.  Gluten-free recipes are often a great place to start, as long as the recipe don’t rely too heavily on xanthum gum to hold it together.  Other recipes that are often good bets too are those that use cake flour, use at least a couple of eggs, have dried fruit, have fruit or vegetable purees, have liquid sweeteners (like honey), or that have fairly large amounts of fat in them.

Paleofying is as much an art as it is a science.  I vaguely remember a time when I did not have extremely well-honed cooking instincts (I think that was back in middle school).  But even starting out as a fairly good cook, there was a steep learning curve to all of these new ingredients and to baking without gluten.  After a year of paleo baking (and blogging!), I have a much better understanding of how to adapt conventional recipes now and thought it was high time I share some of this knowledge and experience with you, in addition to my perfected recipes.

This post is the first in a 4-post series.  In this post, I will discuss paleo flours and other ingredients that add bulk to a recipe.  Part 2 of this series will discuss binders (ingredients that hold baking together).  Part 3 will discuss leavening agents and sweeteners.  Part 4 will discuss some strategies for doing iterations and troubleshooting your recipes.  You may also be interested in some of my posts that reference paleo baking ingredients:  Important Pantry Items for The Paleo Baker, Paleo Flour Substitutes, Sugar vs. Sweeteners, and Is Sugar Paleo?).

I am continuing to expand my paleo baking tool kit by playing with new ingredients.  Below is a list of all the paleo flour substitutes I can think of and other ingredients that add bulk to a recipe.  Some of these are still fairly new to me, so I still have fairly limited experience with them.  Which flour substitute(s) you choose really depends on the type of recipe and what the texture of the finished product should be.  I will try and give you enough information to help get you started.

Blanched Almond FlourThis is the stereotypical paleo flour substitute.  A high quality blanched almond flour (like Honeyville Farms or JK Gourmet) is very finely milled and can be quite light compared to other nut and seed flours or even a less finely milled almond flour (like Bob’s Red Mill, which I consider and almond meal).  Generally, it measures 1:1 when substituting for wheat flour.  It works very well in baking where you want a denser crumb, like muffins, coffee cakes and chewy cookies.  In recipes that also have a fairly large amount of wet ingredients, adding a starch or coconut flour can be helpful.

Almond MealThis is a less finely ground version of blanched almond flour.  It typically uses the whole almond (like NaturAlmond, Trader Joe’s or Honeyville Farms) but some blanched almond flours (like Bob’s Red Mill) actually qualify more as a meal than a flour.  This is best for breading meat, but also can be used for dense baking like dense cakes (e.g. fruit cake), some cookie recipes and pie crusts.  If you are using almond meal in place of almond flour in a recipe, use slightly less as it tends to be denser.

Coconut FlourThis flour has a very high fiber content and absorbs liquid very efficiently, so it is really only used in recipes that have a large amount of wet ingredients.  Because it makes for a finer crumb than nut flours, I like coconut flour for cake and cupcake recipes.  It is also good for shortbread style cookies.  This is a very tricky flour to work with; often 1tsp can make the difference between the texture you are going for and something completely different.  When doing iterations with recipes that use coconut flour, always make small changes to the amount of flour used.  Always sift coconut flour before adding to your recipe, unless you are blending your batter in a blender or food processor.  When you add coconut flour to wet ingredients, the batter will thicken as it sits for the first few minutes.  It’s always a good idea to give your batter time to thicken before putting it in the oven.  The general rule of thumb is to replace wheat flour with ¼ the amount of coconut flour.  This will be sufficient for some recipes; but if you need to bulk up your dry ingredients, you can then add some nut or seed flours to bring the volume up a little (a good place to start is with the same volume you are using of coconut flour).  Different coconut flour brands do behave slightly differently depending on how finely they are ground.  I typically use Tropical Traditions brand now but I find that Bob’s Red Mill behaves very similarly.

Arrowroot PowderThis is the dehydrated and ground arrowroot tuber (not the cassava root).  It is mostly a starch and is great for adding lightness to a recipe (also lovely for thickening sauces).  Arrowroot powder can replace corn starch in recipe 1:1.  You can also mix arrowroot powder with very finely ground granulated sugar to make an acceptable substitute for icing/confectioner’s sugar.  If replacing wheat flour with arrowroot flour to add lightness to a recipe, replacing up to ¼ of your flour with arrowroot is typical.  I love using arrowroot in conjunction with coconut flour for cake recipes.  It doesn’t add much hold to baking that don’t have much binding ingredients, though.  I use arrowroot powder frequently enough that I actually use the Subscribe&Save program from amazon to have it automatically shipped to me.

Tapioca StarchThis starch comes from the ground cassava (a.k.a. yucca, yuca, manioc, tapioca) root.  This is not the same as arrowroot powder.  Even though many people use tapioca and arrowroot interchangeably, they actually have fairly different properties in baking.  Tapioca adds elasticity to baking, helping bind as well as giving more bounce (the cassava root is naturally a very slimy starch).  Tapioca nice to use in paleo bread recipes and can be useful in cake recipes as well to give a little more bounce to the baking.  You can replace up to about half of the flour normally called for in a recipe with tapioca (some gluten-free baking replaces all of the flour with tapioca, but tapioca is probably the least healthy of the paleo flours, so I don’t recommend this).  Tapioca also isn’t a very good substitute for corn starch, but would do in a pinch.

Most paleo baking you will find on my site and others use various combinations of the above four flours.  But, these aren’t the only paleo flours out there and there are some really great less-frequently used options to consider.

Plantain FlourPlantain flour is quickly becoming one of my favorite flours to work with, although I am still experimenting with it.  It is simply ground dehydrated plantain.  It does have a distinct plantain taste so it doesn’t work in all baking.  It has a lovely ability to bind (similar to tapioca starch, but with more of a wheat flour like texture and crumb) and generally can be substitute wheat flour 1:1.  It seems to work very well in soft, cakey and/or chewy baking recipes and not as well if you want some crunch or crispness.  A word of caution.  Some flour are labeled as plantain flour but actually contain a mix of different tubers, often containing potato starch in addition to plantain flour.   If you are buying this from a store, make sure to check the ingredients label.  I buy Barry Farm plantain flour from amazon.

Sweet Potato StarchThis is sometimes labeled as sweet potato flour, but this fine white powder is actually a processed flour/starch.  It substitutes well for arrowroot, but has almost no ability to hold baking together.  You can use this as a corn starch substitute or in combination with other flours as a flour substitute.  I’m not super enthusiastic about this starch, but it’s a good option if arrowroot is hard for you to find.

Sweet Potato PowderThis is also sometimes labeled as sweet potato flour, which can be very confusing.  Sweet potato powder is ground dried sweet potatoes and still retains its orange color (sweet potato starch is white).  This is a more interesting flour because it has some fiber and can absorb liquid so it has more ability to hold baking together.  I have used it in pancakes and have played with it as a flour substitute for brownies.  I’m still getting familiar with this flour, but it’s definitely a neat one to play with.

Kuzu StarchI am just starting to play with kuzu starch (which is ground dehydrated kuzu root, used in Asian cooking).  Apparently, it is even better than arrowroot at thickening and I’m hoping that it will be useful to help get a few recipes I’m working on a little firmer in texture.

Sunflower Seed FlourFor those allergic to nuts or just almonds, sunflower seed flour can be used the same as almond flour (it can be a little denser depending on brand, so you might need to pull back the amount somewhat).  It has the fun property of turning green when used in baking that also contains baking soda (it’s totally safe to eat when it does this).

Hazelnut FlourThis can also be used the same as almond flour, but yields a different flavor to the baking.

Chestnut FlourThis can also be used the same as almond flour, but yields a different flavor to the baking.  It has a  more hold than almond flour, which is very handy, so you can easily use this flour on its own in some recipe.  It’s also quite a bit sweeter so you may want to reduce the sweet ingredients in your recipe if you are using this.

Pumpkin Seed FlourThis is another seed alternative to almond flour.  Pumpkin seed flour measures more closely to almond flour due to its higher protein content.  Also has a distinct flavor and slightly green color and is easier to make at home than most other nut flours.

Ground nuts and seeds—Ground nuts and seeds are a wonderful way to add more texture and bulk to making.  Many of them can help act as binders as well.  Mostly, you’ll be grinding your own in a food processor or blender.  A finer grind will act more like a nut flour, but you can also grind more coarsely which replicates the texture of oatmeal or other whole grain ingredients very well.  Making a mix of different nuts can replicate the flavor and texture of oatmeal and can help fix texture problems when working on denser baking recipes like cookies and muffins.  Ground flax seed also qualifies here as a way to add bulk and texture to baking and is an excellent binder too.  Chia seeds are often used similarly to flax seeds but these are a pseudograin, and Prof. Loren Cordain comes down pretty hard on chia in The Paleo Answer.  My favorites to use are Whole Almonds, Pecan Halves, Walnuts HalvesMacadamia Nuts, Hazelnuts (Filberts), Pistachios, Cashews, Brazil NutsPepitas (hulled pumpkin seeds), Sunflower Seeds, Brown Sesame Seeds, Black Sesame Seeds, and ground flax seed (golden or regular, which act the same but just look different).  The combination of walnuts, coconut, and pumpkin seeds makes for a fantastic oat-like flavor (see my recipe for paleo porridge, “oatmeal” cookies, and apple crisp for examples).

Finely Shredded CoconutThis is also a good bulking ingredient, similar to ground nuts and seeds but with a slightly different texture and flavor.  Because of the fiber content, it will absorb a little liquid (although nothing like coconut flour), so it does behave slightly differently than other nuts and seeds.

Vegetable Powders—Pumpkin, carrot, spinach, sweet potato, winter squash, red cabbage, and beet powders are all available.  I have only used a handful of these in pancake recipes, but I think these are a very fun way to deal with recipes where you want the sweetness and maybe flavor of these vegetables but are struggling with too many wet ingredients.  These are also a great way to add natural color to recipes (usually you can use little enough that these contribute color but not flavor).

Pureed Green Plantain—This is my newest secret weapon in paleo baking.  Green plantains are very starchy, have a fairly neutral flavor and can act as a binder and give bulk to a recipe.  I have several recipes that use green plantains and many more ideas for this versatile fruit!  Check out my paleo pancakes, paleo crepes, and decadent double chocolate cookie recipes for examples.  Ripe plantains are another option, but behave quite differently in baking (sweeter, more flavorful, act more as a binder than a flour).

Pureed or Ground Root Vegetables —Don’t underestimate the versatility of canned or pureed root vegetables in your baking.  And you aren’t limited to canned pumpkin.  Sweet potato, yucca, taro, parsnip, carrot, winter squash, and plantain are all good options (see my recipe for paleo biscuits for an example).  When cooked and pureed, they can both act as a binder and add bulk to a recipe (see my spinach brownies or pumpkin gingerbread muffin recipes as examples).  When ground and raw, they have a very different effect on texture (see my carrot parsnip muffins for an example).  They also can add some sweetness without the use of sugars and the flavors are often well camouflaged by other ingredients.

So, which one do you use?  The classic is to use almond flour on its own or in conjunction with arrowroot, tapioca and/or coconut flour as a first attempt in a recipe.  The reason why this is so common is because the ingredients are fairly easy for most people to find and they are fairly predictable in how they will behave in recipes.  And while I encourage you to play with the other flour substitute options, to get you started on your paleofying adventure here is my basic formula for replacing wheat flour with almond, coconut, arrowroot and/or tapioca flours.

  1. For a recipe without many wet ingredients (like cookies):  replace wheat flour with 80-100% almond flour, 0-20% arrowroot or tapioca (depending on whether I want the lightness or the elasticity) and 0-20% coconut flour.  Yes, there is a range here.  I am more likely to use a starch and coconut flour if the volume of flour is fairly high (almond flour is expensive!).
  2. For a recipe with substantial wet ingredients (like muffins or cakes):  replace wheat flour with 25% nut flour, 25% coconut flour, 25% arrowroot or tapioca (depending on whether I want the lightness or the elasticity).  Yes, this doesn’t add up to 100%, which is because of the properties of coconut flour.
  3. I don’t have a fixed formula for replacing flours when the desired outcome is nut-free.  I just wing it.
  4. These are just my first iterations.  Sometimes I change things up as soon as I see the texture and thickness of the batter (that might be harder for you to do if you aren’t used to working with the flours).  After I see what the texture and taste is of my first attempt, I either change quantities or try different flours.  And of course, as I play with other flour substitutes, this may change, my default formulas are likely to change.

I hope this will get you started on your paleofying adventures.  As you play more and more with these ingredients and get to understand their properties better, it will be easier to intuit what will work in any particular recipe.  But, I still have recipes that take me many iterations to get right.  And of course, if you adapt a recipe that is absolutely awesome, you are welcome to e-mail it to me to share on the blog:  thepaleomommy@gmail.com

Savory Roasted Taro

August 29, 2012 in Starchy Staples

Do you miss roasted potatoes?  I did, until I discovered taro.  Taro is a nutrient-dense tuber native to Southeast Asia.  It is considered a “safe starch” and is recommended as a dense source of complex carbohydrates in Practical Paleo, The Perfect Health Diet, and by Chris Kresser.  Of course, many people include peeled white potatoes in their implementation of a paleo diet (the phytic acid and glycoalkaloids are concentrated near the peel), but Prof. Lorain Cordain is firmly opposed to consumption of potatoes (see The Paleo Answer for his extensive argument against them).  For the many of us who are intolerant to nightshades, taro is a delicious alternative. 

Taro is a small, roundish, dark brown and hairy tuber that is often available in grocery stores and Asian food markets.  It’s outer skin is easily peeled off after steaming.  Many traditional Asian preparations of taro are designed to heighten its inherent sliminess (perhaps why I am not a big fan of these dishes).  This preparation is designed to reduce the slime factor and the end result is a flavor and texture very similar to potato. Serves 3-6.

Ingredients:

 

1.    Place whole unpeeled taro in a steam basket or steamer.  Steam for 10-15 minutes (depending on the size of your tubers) until you can pierce them easily with a knife but before they get too soft (this of the firmness of not quite cooked potatoes). 
2.    Remove from heat and let cool until you can handle them. 
3.    Peel off the bark-like skin (it should come off fairly easily) with a paring knife.  Cut peeled taro into quarters or ½” rounds.  Meanwhile, turn on oven broiler (set to hi, and with a rack 6-8” away from the element in your oven).
4.    Melt tallow (or other cooking fat).  Pour over taro and toss with spices.  (you can do this step in a bowl or directly on a baking sheet).  Spread taro on a baking sheet.
5.    Broil taro for 10 minutes, flipping or stirring every 3-5 minutes, until browned and slightly crisp on the outside. 
6.    Enjoy!