It's Not a Yam

I've just done some research, and discovered that I've never had a yam. And I'll bet you haven't, either. In the US, they're all sweet potatoes. The softer ones are called yams, but they're still sweet potatoes. Actually, yams are African. When slaves came to the US, they thought that our sweet potatoes tasted close to what they knew as yams - and that's where the confusion began, because they started calling them yams.

Wikipedia has a whole webpage about it.
And here's a group that's dedicated to Sweet Potato Awareness, and even has a downloadable flyer to print and pass out.

I don't care what they're called, I love them. Baked, cubed and boiled, sliced and microwaved. They also taste great right out of the can.