Cauliflower is an excellent source of folic acid, which protects against heart disease and birth defects, making it a particularly healthy vegetable. It does provide some vitamin C, so it’s a good immune-booster, but the white part is in fact the immature flowering head. Eating some of the tender green leaves closest to the flower will increase the amounts of vitamin C, betacarotene and folic acid that you get. Besides these factors that cauliflower has, the taste and texture like crunchiness make this vegetable as one of my favorite.