I used a white plastic bag from the grocery store full of run of the mill shake nothing special and simmered it in a pot for about 6 hours. I put it through a .99 cent nylon from walmart and than just added the needed amount of butter for what the brownie mix asked for and let it cool in the fridge. It leaves a green goop like in a cooled frying pan on the stove, I poked a whole in this and let the water drain into the sink and put the green butter it in my mix for the brownies. I made my brownies in a pie pan and i'm a big guy say about 275 give or take and I ate two medium size and it took about an hour and I had a great body high real floaty.....in fact I think I'll go and eat the last piece.