You might only eat this veggie at Thanksgiving, but sweet potatoes are full of nutrients that make them worth having all year.
The truth is they're not potatoes. They are naturally sweet roots in the morning glory family. Although Native Americans grew sweet potatoes when Columbus came to America in 1492, these veggies grew in Peru as early as 750 B.C.
There are hundreds of types of sweet potatoes. Some have white or cream-colored flesh. Others are yellow, red, or purple. The "Covington" is the variety you're most likely to find at the store. It has pink skin and bright orange pulp.
While yams and sweet potatoes may look alike, a true yam is a tuber vegetable, like a regular potato.