Leafy Greens Guide: Kale, Spinach & Lettuce Nutrition

Leafy greens like kale, spinach, and watercress provide high levels of calcium and vitamins. From washing collard greens to understanding the nutritional value of mesclun vs. romaine, master the storage and preparation of your favorite salad greens.

How to Cook Watercress

Published Jul,08 2011 | By K.T. Parker

Watercress is in the same family as mustard and cabbage,with a somewhat bitter, peppery taste. The vegetable is full of vitamins, minerals and antioxidants. A serving has more iron than spinach and provides 312 percent of your daily vitamin K requirements, according to Food Facts.