make canna-oil with duff (vapo leftovers) is a great way to make brownies. i just made some and everyone who ate them was KNOCKED out within 4 hrs... amazing!!! a lot of peeps have hangovers (major burnout) the next day though. easiest way to do it is using a crockpot too... fool proof!

another reason vaporizers are great. when you are done smoking a bowl, you throw out the ash. when you are done with vaporizing, you get to use them again for FREE brownies or whatever