Fly Agaric, also known as Amanita muscaria can be found in different forms, such as fresh mushrooms, extracts, and dried mushrooms. The dried mushrooms can be eaten or smoked in blends, but the best way to prepare them is in hard liquor.
After grinding the dried mushrooms, pour them into the liquor, and let it soack for a week or more (the longer the better). Make sure you filter the mushrooms carefully before enjoying the taste and effects of your new liquor. If any mushroom pieces are left in the liquid, it might lead to bad taste.
If you decide to smoke the dried mushrooms instead, pure or as a blend, bare in mind that the effects are slightly less strong than soacked in liquor.
It is also common to just use the upper skin of the shroom (the red skin with white spots). The upper skin contains most of the active components, this way you get a stronger ingredient for your smoking blends.
Alternatively, a tea can be prepared with the mushrooms. Just put them in a pot of boiling water and let them soack for about 10-15 minutes.