Question: what is the difference between jewel and garnet yams?
Answer: Garnet yam. The jewel yam seems to cook oranger than the garnet, but I have trouble telling them apart. I think I've figured it out, though: the garnet yam has a reddish skin and tends to be thicker and rounder—sort of more corpulent—and the jewel has brown (sort of light brown) skin and is longer and skinnier.