Spinach is a good source of beta carotene, vitamin C and folic acid. If you buy loose spinach leaves, rinse the leaves well to remove grit and sand, then dry well with layers of toweling or a salad spinner. Along with some citrus fruit, add a little crunchy texture with diced jicama, canned water chestnuts, a handful of nuts, or some diced apple. Recipe for Spinach and Citrus Salad from our Salads recipe section.