Plus, romaine lettuce is packed with vitamin C, vitamin K, and folate. It’s a good source of beta carotene, which converts into vitamin A in the body. Romaine lettuce, Raw, 1 cup shredded ...

Red leaf lettuce is an excellent source of vitamin K, providing 149% of the DV in 3 cups (85 grams) of chopped leaves . Vitamin K is crucial for blood clotting. Without it, you would increase your ...

The romaine lettuce had to be left whole, except the floppy ends, which would need to be chopped off. The fact that the lettuce had to be romaine was, I figured, a given. But that was then.

But it's not exactly a close race. While Americans are eating record amounts of lettuce -- about 33 pounds per capita last year -- the bulk of that is still iceberg, or head, lettuce.