How to tell sweet potatoes and yams apart. A sweet potato has tapered ends and thin, smooth skin and flesh that can range from light beige to burnished orange to purplish, even. A yam is cylindrical, typically white-fleshed—there is a purple variety, too—and has rough, dark, almost hairy skin. 14 нояб. 2017 г.
How do you know if it's a sweet potato?
Check for the color Most yams are white inside. Scratch the skin with your fingernail. If it's white, it may be a true yam; if it's orange, it's probably a sweet potato. This can get confusing, though — there are white and purple sweet potatoes, just as there are reddish and purplish yams.
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