I prefer to use turkey tail that I have collected in my local woods. (It is the DIY part of my personality.) However, I do not find enough in good condition to harvest and process. ( I have full confidence in Host Defence single species products.) My processing is a to trim the mushrooms to remove bark etc, air dry or use a dehydrator, chop them up in a coffee grinder, heat them overnight in a crock pot set on high temp, strain and filter, and consume. I make up a batch for one week at a time and refrigerate until I'm ready to use.