Everybody seems crazy for kale right now. Some experts even argue that it's the superfood of superfoods. One cup has only 33 calories, but contains over 100 percent of your daily value of vitamin C, 200 percent of vitamin A, 10 percent each of folate and calcium, and even a couple grams of protein. But the vegetable in its raw form can be a bit rough (it's known as a go-to digestive aid for a reason). How can you make it tastier?