Various school lunches from around the world. School lunch doesn't really represent the best a country has to offer, but we still love it, because we grew up on it.
Iceberg lettuce isn't devoid of nutrients, but it's pretty close. It's mostly water, after all. To compare:One cup of iceberg lettuce:8 calories0.5 gram protein0.7 gram fiber10 mg calcium 78 mg potassium1.5 mg vitamin C16 mcg folate13.3 mcg of vitamin K164 mcg beta carotene152 mcg of lutein + zeaxanthinOne cup of romaine lettuce has:8 calories0.58 gram protein1 gram fiber16 mg calcium116 mg potassium11.3 mg vitamin C64 mcg folate48.2 mcg vitamin K1637 mcg beta carotene1087 mcg of lutein + zeaxanthin.
Interesting, thanks. Romaine puts iceberg to shame with those last few.
Please no foul language.