What’s the difference between yams and sweet potatoes?

StealthToad@lemmy.world to No Stupid Questions@lemmy.world – 150 points –

Boss and former coworker got into a very amusing argument over this and it got me curious.

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And now do kūmara! They sometimes get called sweet potatoes in New Zealand

Looking them up, it sounds like they're the same species as American sweet-potato, which is one more bit of evidence for early contact between Polynesians and South America.

I believe they are different. Kumala (in Fijian) is very different than a yam. Yams and uvi are more tubular, and the skin will slip off after cooking and kumala is more bulbous. Google shows different pictures than what I remember, showing kumala closer to taro (dalo in Fijian).