Damn 4oz of bud all in one batch??!! No wonder it came out too potent lol.

I don't know what the cut off number is for how much bud 1lb of butter can hold. I'm guessing that there really isn't any cut off number, just that the more bud you use, the more concentrated and potent the cannabutter will be.

But I think the standard 1lb of bud to 1lb of butter is a pretty good number to go with. because any less and it will not be that potent, and anymore is gonna make the butter too potent. And ironically there is nothing I hate more then an edible that is too potent, because if you are 'too high' or get a headache then you will still have to endure hours of that high.