Eggplants are members of the nightshade family, which also includes tomatoes, potatoes, and peppers. Eggplants provide very little nutrition, but are among our most versatile vegetables and a component of many popular ethnic dishes, including Indian curries, Greek moussakas, Middle Eastern baba ghanoush, and French ratatouille. Eggplants are filling, yet low in calories – a cup has 40 calories, and it provides a fair amount of fiber.