I've made ABV brownies twice since I got my Volcano and Launch Box. I made the first batch a couple of months ago using 13g ABV and a teaspoon or so of kief, plus some stem I had saved. I ground the ABV and stem to a fine powder in a coffee grinder. I mixed all of it with 50ml of butter (whatever the packaged brownies called for) and water in a slow coooker (crockpot) set on the low temperature setting for 12+ hours. Strained the mixture through cheesecloth into a plastic yogurt tub (the size of a small ice cream tub). Set it in the fridge for 5 hours to separate and solidify. Took it from the fridge, held it over the sink, and cut a hole in the bottom of the tub. The water flowed out, leaving the cake of Cannabutter to be removed cleanly and easily. I baked a batch of 12 brownies, separated into the 12 cups in a muffin baking tray, instead of in a square pan/dish where you'd have to cut the brownies into servings. This method worked very well. 1 brownie from this batch was enough to get me well done for 5-7 hours. 2 brownies kept me stoned for a full day.
I just made another batch of butter last week. I used 18g ABV, 6.5g kief, and all the stem I had saved. I did the same process as before, but I used 150ml of butter, so that I would then have enough butter to make 3 separate batches of brownies (the 6.5g of kief made this possible). First batch of brownies were great. Similar potency as the batch mentioned above. Unfortunately, I didn't read everything in this thread, so I didn't know how a brownie/butter overdose can affect someone. My friend (who gets stoned from just 1 - 3 puffs from a j) ate 1 brownie, and his girlfriend (who had never been stoned in her life - she couldn't get stoned from my Volcano) ate 1/2 a brownie, and went to a folk festival with me. They both became very paranoid and afraid, and he became slightly nauseated, so we all left the concert. They were really shaken by the overwhelming feeling of fear. They are both thin, with little body fat, and little to no tolerance for weed. Their stomachs weren't very full, either.
I gave a brownie each to my brother and his girlfriend, as well. They ate them on a different day, separate from me and my paranoid friends. My brother smoked pretty frequently for years, but stopped almost completely a couple of years ago because it started making him too paranoid. His girlfriend is a pretty frequent smoker, though. I gave them a Launch Box a few weeks ago, and they love it. My brother doesn't get paranoid from it. So, I gave them a brownie each. They started with half a brownie each at noon, and an hour or two later, ate the second half. My brother loved it. Highest he's been since he was a teenager (in his late 20s now). He was stoned all day, all night, and still a bit stoned when he woke up the next morning. He said that if you're gonna eat one of those brownies, you better have nothing to do that day.
CR