A version of the classic Roman soup. Pumpkins and leeks are puréed together to get a creamy, velvety soup. A dash of fresh mint adds that necessary flavour. Pumpkins are usually large vegetables. To make things a little easier, ask your greengrocer to cut a chunk off for you. The addition of potato gives a little thickness to the soup, but you can omit it if you are an avid pumpkin lover!