How much does 1 PF cake yield?

This question cannot be answered accurately because it depends on a number of factors including - but not limited to - the recipe used, the mushroom strain, enviromental conditions and luck. If you absolutely must have an answer, a PF tek fruited directly can yield anywhere from 3-7 gram dry per half pint cake. Yield can be increased by using the PF cake as spawn or by crumbling it up and casing it.