This is an alternate recipe to Cannabutter 1, useful if you want to use the residual plant matter to make stronger cannacapsules. More of the butter remains in the plant matter than in Cannabutter 1 so the residual is more potent; however, there is no liquid to reserve for other recipes and the butter yield is proportionally smaller. So, which recipe to use depends on which by-products you’re partial to. Also, as written, Cannabutter 2 is a stronger brew, weed quality being equal. Some swear by this method, others by Cannabutter 1.