One major type of lettuces is called head lettuce, and it includes varieties belonging to Crisphead group (e.g., iceberg) and Butterhead group (e.g., Bibb, Butter, Boston varieties). Head lettuces are the most similar to cabbage in that they are tighter-formed heads that are bright green. Modern-day head lettuce is believed to have dated back to about the 18th century, when farmers’ records started to report new varieties. It’s no secret that lettuce is one of my absolute favorite foods, and that’s why I’ve created some amazingly yummy recipes that feature it! Perhaps the very best example is my Lettuce Soup.
Apart from being super tasty, lettuce is also a great source of nutrition! While lettuce is almost 96% water, it does have a variety of micronutrients, most notably vitamin K1 (97% RDV in 100g!) as well as folate and vitamin A. The mineral content is mostly trace minerals and depends greatly on the quality of the soil in which lettuce is grown. As with most leafy greens, lettuce is also a great source of phytonutrients.
Lettuce is a cool weather crop, so it’s more likely to be in season at a farmers’ market in late summer or fall.