Hey guys, interesting subject here, a m8 and i delved into the world of canna cooking a few years ago, we used to make a 500 grams of butter using an ounce of good quality well dried bud, using the method in the first post, by using water with the butter and weed gives you a nice buffer so that u dont actually burn the thc, also it helps take out some of the extra chlorophyll, hence making a much tastier product.
I have personally made a few different recipes with canna butter but i find that mixing it in with chocolate gives a really nice quick onset, due to the high fat content in the chocolate, anywhere between half an hour to an hour and a half for full onset, but please dont be fooled, this method of using weed is very underrated, dont eat to much, work your way up slowly as it can completely knock you on your arse, i once consumed about half an ounce of choc brownie mix one afternoon becasue i wasnt really feeling stoned for a good hour or so and then all of a sudden, WHAM!!!!
There i was curled up in the fetal possition on my mates bed, asking him to turn the tv off and the radio off as all i could hear was white noise, i completely greened out, i had to get my mother in law to pick me up as there was no way i could drive home. This was a full psychadelic experiance at first that led to a very psychotic experience at the flick of a switch, i dont really remember much beyond hearing the white noise part, however my wife told me that i slept for 18 hours afterwards, ive not consumed canna butter since.

My point here is just becareful, dont over do it, as mentioned before when consuiming weed like this, you are getting 100% of the thc, a little is alot .