A lasrge sausage almost the size of the circle you'd make with your 2 index fingers and thumbs. Very
very (very) fatty. It's soft and has a lot of soft fat in it. Not pretty inside, looks like finely chopped up bits of offal in a disgusting pukey colour. It's mildly spicy, not hot, but spicy.
So you can understand why I can't imagine it with potatoes.
H loves it but it is so cholesterol-laden that I limit our consumption.
In the south, we had some neighbours who lived in Italy, normally. His mother used to cook it for him but his wife refused to because of the fat. So I bought one in Toronto and took it down to make for him. He was in HEAVEN (howver you say that in Italian)...probably paradiso.