3. Beans From chickpeas to lentils, dry beans are a major source of protein in diets throughout the world. Yet I never ate much growing up, except in the form of tofu. Rather than sprinkle them on salads or drown them with pork fat, beans can easily take center stage in a meal, as other cuisines have generously proved. They're good for your heart, as the saying begins, and easy on the environment to grow.