Sweet potato lookalike

YAM

Often mistaken for its orange cousin but technically a different tuber with rougher skin.

This clue plays on the common confusion between sweet potatoes and yams, which many people use interchangeably in everyday language. While they’re botanically different, grocery stores in the U.S. often label orange-fleshed sweet potatoes as "yams" for marketing, making "yam" a fitting answer for something that looks like a sweet potato. The clue relies on that widespread mix-up rather than strict botanical accuracy. It’s a straightforward definition with a hint of real-world wordplay.