Don't know about that but have a great recipe, take a 1/2oz give light grind, take a large pot bring to simmer, put 3 sticks butter and weed in smaller pot do not let it boil off, let simmer for 2&1/2 hours, get a fine metal strainer and pour butter through strainer use a spoon to mash juice out of weed, clean strainer and strain again, add 1 teaspoon of vanilla, put in container let cool put in fridge to harden, use an 8x8 round non stick pan, add brownie mix and butter, cook till done, after cooling cut brownies into 4 even slices then cut those in half so you will have 8 even doses, with the double strain and vanilla you will taste no weed, people beg me for these, at dispensary 1 brownie is $35+ tax and was told mine are much better, I cut into 4 pieces and ate 1 and passed out, when woke could not stand, staggerd around all next day and even felt day after so cut into 8 doses bc 4 is to much.