A potato baked in its skin ('jacket'). I believe this is a Britishism, or whatever the word is. In the U.S. this would be called a baked potato. You get all of the nutrients from the skin, plus texture - A jacket potato can be eaten with all kinds of fatty toppings, like butter or sour cream. Meat-eating people may add bacon. Others might add cheese.

What nutrients are in the skin? From what i can tell, calcium, potassium and fiber figure among them. I just eat it with the skin for the texture and the pop/tear when the skin breaks.

This definition was a chatterbox request.