Oregon  psilocybin… draft
…draft rules prohibit use of the aforementioned dung and wood chips in cultivation and production of psilocybin products. These media are traditionally often used.
…prohibitions include producing psilocybin using genetically modified organisms, and producing synthetic psilocybin. This final prohibition cuts against the FDA and big pharma psilocybin model, which is synthetic all the way… on offer are: (a) fungi cultivation (for whole fungi, mycelium and homogenized fungi); (b) psilocybin extraction (extract) and (c) edible psilocybin production (edible products)… extraction… water, vegetable glycerin, acetic acids, ethanol and methanol would all be permitted solvents.