Recipe Tips. Tip 1: The butternut squash keeps its shape better during cooking if it is left unpeeled. The skin is edible, but you can remove it when eating the hotpot if preferred. Tip 2: A tablespoon of dried mixed herbs can be added to the dumpling dough if desired. Tip 3: To freeze the stew portion it into separate containers, it will last in the freezer for up to 2 months. Tip 4: To freeze the dumplings, put them on a tray, making sure there is space between them. Put the tray in the freezer, once the dumplings are solid you can divide them into freezer bags.