Rich said: So not everyone agrees - David I think has a different opinion, but I am not a big proponent of mushroom tinctures. I much prefer / strongly prefer decoctions or powders that have been heat treated to be bioavailable. I think tinctures need to be taken at a very high dosage making them expensive and less practical, and the shelf life is short. If you want to do it, you decoct the mushroom down to a thick decoction then add alcohol so that you end up with the final alcohol percentage. There are also double extractions you can learn to do which is slightly more involved but can be fun. Again, as a clinician not my preferred way to use the fungi!