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 Make Romaine Lettuce Last Longer

Published Aug,17 2011 | By Sommer Leigh

Romaine lettuce's high water content means there is no long-term preservation method suitable for making the lettuce last longer. Drying, canning and freezing all produce inedible results. For the best nutritional value, romaine lettuce is best served when it's fresh, green and crisp.