Here’s the kicker: most of what you call “yams” at the grocery store are actually sweet potatoes. I know, right? It’s like finding out your best friend has been using a fake name for years.
In the U.S., farmers and marketers started calling orange-fleshed sweet potatoes “yams” in the 1930s to tell them apart from the pale, firm sweet potatoes. It stuck. Now we’re all confused.
What’s a Real Yam, Anyway?
Real yams are from Africa and Asia. They’re starchy, rough, and look like tree bark with a bad attitude. Their skin is dark brown, and the flesh can be white, purple, or red.
You don’t see them much in standard supermarkets. If you do, they’ll be in the international aisle—and they’ll probably say “African yams” in tiny letters.
Also fun fact: yams can grow up to five feet long. That’s not a vegetable; that’s a bat. They can weigh over 100 pounds. Good luck fitting that in your oven.
Sweet Potatoes: The Undercover Star
Sweet potatoes are from the Morning Glory family. Yes, the flower family. They’re smaller, smoother, and come in two main types: firm and dry (pale skin), or soft and moist (that orange one you love).
The orange kind gets all the fame. It’s sweet, creamy, and practically begs for marshmallows and brown sugar. That’s the one everyone fights over at Christmas dinner.
