Peanut beans

These are nuñas:

The nuña is a native Andean legume that looks (and tastes) somewhere between a bean and a peanut. In raw form, they look almost exactly like beans, and can come in all sorts of colors - red, white, black, brown, speckled, etc.

But when you heat them on the stovetop, the skin/shell of the nuñas loosens, and they "pop" into a delicious edible snack (the first photo shows cooked nuñas) - just throw a little salt on them!