This is a traditional steamed pudding mold that actually holds just a bit over 1 quart (about 4.5 cups). It is a fluted mold with a tube in the middle and a snap on lid. This mold is best used in a pot with some sort of trivet to raise it up for steaming. We have had great luck with our double boiler maker sold separately (958272 ). Tinned steel will give you an evenly cooked mold but it needs to be dried thoroughly after washing. There is no bigger treat at the holidays than a traditional plum pudding with a brandied hard sauce. Try it! The mold has a 6" diameter on the lid, 4" on the bottom and is 4.5" deep.