Last time I made c-butter it was with 1 oz dried fan leaves & 1/2 oz vapo-poo into 1/2 lb clarified butter. I did it (with water) in a small slow cooker for 3 hours. A tablespoon of the stuff will disassemble you.

And pardon me for bragging, but I thought it was kind of funny: first time I tried the stuff, I figured I'd do a tablespoon (had no idea what to expect in terms of potency). I eyeballed it & chopped off what I figured would be a tablespoon. Then I thought, best check & see how accurate my eyeballed measurement is. Got out my scale & weighed what I had cut - .502 oz.

I was off by two thousandths of an ounce.