Look at the skin. Sweet potatoes have thin, smooth skin that’s easy to peel. Yams have thick, rough skin that needs a knife to even break through.
Check the shape. Sweet potatoes are usually torpedo-shaped with tapered ends. Yams are more cylindrical, like a fat cigar or a small log.
Feel the weight. Yams are denser and heavier. Sweet potatoes are lighter and a bit spongy. (Go ahead, give them a squeeze. No one’s watching.)
The Taste Test (Because You’re Probably Hungry)
Sweet potatoes are, well, sweet. They get soft and almost caramelized when roasted. Yams are starchy and dry, like a regular potato but with less flavor.
If you’ve only had orange-fleshed “yams” with cinnamon and butter, you’ve had sweet potatoes. Congrats, you’ve been living in a delicious lie.
But here’s the kicker: purple sweet potatoes exist, too. And they’re sometimes sold as yams. See? The confusion runs deep. It’s like a vegetable soap opera.