Endive: Although iceberg lettuce is often thought to be the ultimate low calorie food, endive actually has less – only one calorie per leaf, or 17 calories per head! It can be used in salads, like this Curly Endive and Pear Salad, but an even more creative and attractive use is as a replacement for crackers and hors d’oeuvre bases because its leaves are naturally scoop-shaped. Another plus: it doesn’t have to be washed, as its leaves, available all year round, have never touched soil. It also keeps longer than most lettuces, up to two weeks in the fridge. Endive is high in fiber, folates, vitamins A and K, and beta-carotene.