I think many of you are confusing a sweet potato (a member of the potato family), with yams (not a member of the potato family). Yams are the very sweet ones that you put marshmallows and stuff on. A sweet potato is much like a regular potato, but can vary in color from white-ish to red, and that I like to slice, mix with olive oil and spices, and grill. Diced would be good too.