Buy Organic: Lettuce

Whether organic or not, produce from a local farmers market is fresh and has less of an environmental impact. Look for lettuce and other produce at a co-op supporting local agriculture. Most dark greens are good sources of vitamin C and other nutrients. The rule of thumb: the darker the greens, the more nutritious the leaf. One cup of lettuce contains about 5 calories. To reduce pesticide residues, remove the outer leaves before serving.