How to detoxify Amanita muscaria mushrooms so you can cook them
Amanita Muscaria Mushroomsas fresh as possible
Clean the mushrooms well, trimming dirt from the stem and volva.
Boil, then Boil Again
Put the mushrooms whole into a pot and cover with a few inches of cold water, cover the pan, put the heat on high, and bring to a rolling boil.
When the pan is boiling, the heat off, discard the water, then cover the mushrooms with fresh cold water, bring to a boil, then turn down the heat and simmer for 15 minutes.
Remove the mushrooms and drain very well, pressing on them with a towel to remove water that could pop or be a hazard if cooking in hot fat (deep frying, etc).
Cooking and Storing
Cut the mushrooms into pieces according to whatever you're making and cook as usual. If you want to refrigerate them for later, make sure to season them with salt and mix well to preserve their shelf life.
Detoxified mushrooms will last for 3 days in the fridge, and should be discarded after that time.