Since amanita powder is less stable the whole mushrooms, we grind and vacuum pack our powder at the time of sale from quality amanita dried mushroom caps. We don't purchase Amanita powder from other sellers because of its lower quality, and its identity can't be visually verified. Many sellers grind up amanita stems, which are less potent than the caps.
 
Our highest quality Amanita muscaria powder is from locally harvested Amanita that we dried at 85-90F for high potency. These dried mushrooms are promptly vacuum packed and stored at 0F. We a have limited quantity of locally harvested Amanita muscaria. Our Amanita powder is a value added product that we offer for the same price as caps, not a higher cost.
 
Remember, store your dried powder or whole dried mushrooms in a sealed bag in the freezer in darkness for stability and solid-state decarboxylation over time. If they are vacuum packed or a oxygen absorber packet is included, the solid-state decarboxylation is very efficient. Your amanita will actually increase in potency over time. We are currently testing if this equally true for simply sealed bags of amanita with no 02 absorber or vacuum packing. Oxygen, light, and water degrade muscimol over time.
 
During extraction and decarboxylation, some new variables to consider testing are:
1. Water contains dissolved oxygen. Musicmol reacts with Oxygen. Boiling the water for 30 min before adding the powdered mushrooms will remove  a lot of the dissolved oxygen. During extraction and decarboxylation, try to keep the water temp just below the boiling point. The bursting bubbles are like an egg-beater mixing the muscimol in the hot water with oxygen in the atmosphere. This promotes oxidation of muscimol. Keep the pot covered. This will condense a lot of the evaporated water back to the pot returning the small 2-4% of muscimol carried off with the steam via entrainment. The lid also helps create a lower oxygen environment inside the pot. The most efficient method is using a pressure cooker. Heat your acidified filtrate (extract) at 250F for 45-60 min. You will get 30% more muscimol yield than boiling in a round bottom flask with a condenser attached. Decarboxylation at 250F is about 4X faster.
 
While it is possible to make a concentrated paste extract, evaporating off teh water with heat will degrade a lot of or even almost all of the muscimol. Muscimol more stable than Ibotenic acid, but muscimol is still a reactive, unstable compound. A is possible the pastes will be active, but it will cost you a lot of muscimol in the process. Important note, muscarine, a toxin, is very thermally stable. It will not degrade during a concentrating step. Muscimol will degrade. So, you are increasing the ratio of muscarine to muscimol in the final product. Negative side effects from muscarine toxicity are more likely using paste concentrates than mushroom tea.

Most mushrooms bioaccumulate heavy metals. Extracting your mushrooms in acidified water will extract more heavy metals than using pH neutral water. Ibotenic acid and muscimol are both very water soluble and easily extracted into water. Steeping powdered amanita 5-10 min in 200F water is enough. Some stirring is helpful. Steeping whole mushrooms or mushroom pieces yields less actives than steeping powder.