In order to freeze chestnuts, store them in an airtight container and store in the freezer for up to 1 year. Chestnuts can be frozen raw or after they are cooked, with or without the shell.
Chestnuts can be eaten when they are raw, dried or cooked, and they store well in the refrigerator or freezer. Chestnuts stored in the refrigerator should be kept in an airtight container and will last for about 3 weeks. They can be stored in the refrigerator or freezer with the shell still on or after they are shelled and peeled.
Chestnuts can be boiled, steamed, roasted over a fire or baked in the oven. When baking or roasting chestnuts, it is extremely important to score them first as they can explode during cooking, making for a dangerous situation. Chestnut knives are available, which are knives with angled blades that are specifically designed for scoring chestnuts, so it is easier to do. Chestnuts that are boiled do not need to be scored first. When cooking chestnuts on a stove top, be sure to shake the pan often, as the chestnuts can burn.
When eating chestnuts raw, be sure to remove both of the two skins before consumption. To dry chestnuts, store the chestnuts in a single layer in a warm and dry area until they are hard and dried.