Varies considerably. Some yams are the size and shape of small potatoes; others can grow up to 1.5m (5ft) in length and weigh over 100lbs (70kg). Skins may be dark brown or light pink; insides white, yellow, purple, or pink.
Are yams supposed to be white?
Yams have a cylindrical shape with blackish or brown, bark-like skin and white, purple, or reddish flesh.
What color are true yams?
True yams have rough, dark skin, and their flesh can range from white to reddish color, but it's usually white.
Are yams different colors?
The color of a yam's flesh also varies. It can be anything from a neutral white or yellow, to a more vibrant purple or pink depending on the maturity of the yam.
Are yams white or orange inside?
It's all a facade! "Most of the so-called yams you see in American grocery stores are actually orange-fleshed sweet potatoes," explains Mary-Frances Heck, author of new cookbook Sweet Potatoes (and former BA staffer).