Parboil potatoes until just done, pat dry, and toss in oil with black pepper, minced garlic, and salt. Bake at 350 in a heavy pan, tossing occasionally, until tender through. Great with grilled meats.
Mix a cup of sour cream to a half cup of sweet cream. Add the juice of half a lime and a tablespoon of capers. Cover, keep at room temperature overnight, then refrigerate. Coat sweet potatoes with vegetable oil and salt. Bake, slice, and cool. Top with cold lime crema and black pepper.