lol if you grow mj its confusing. All you do to "flush" the cakes is put the cake back under the light. Some choose to recase in a very thin layer of substrate but it is not needed really. you can get many flushes from one cake but the first is always the best and sometimes if you do too many flushes you get fucked up shrooms that are like 1.5 oz each but not really all that potent. goodluck and remember... if your gonna colonize, sterilize....when in doubt.. throw it out (if you see infection eliminate it or you may compromise your whole project).