>>>>>>>>>>>[quote=Weezard]I don't understand all the re-melting.
Cosmetics?

That, and purity. Look at the pics. Each time the water is clearer. As I understand it, that's dirt and plant material that is coming out of the butter.

I've tried samples of each "wash" result and the cb tastes better each time: milder, smoother, more subtle.

>>>>>>>>>>>>"What does the 4 ounces of trim weigh after you dry it?"

Have not done that yet.

>>>>>>>>>>>"That is where most of the lost butter will be found.
And do not discard the dross.
Put it in a sieve and pour boiling water through it as a rinse.
That will recover some, but not all.
The only way to get the rest of it, and some more resin as well, is to wash it with a solvent like ethanol and then evaporate the solvent."

Sounds like something I do NOT want to try in a small apartment kitchen.

>>>>>>>>>>>"It is very difficult to quantify an extraction using butter."

I've noticed.

I'm not a chemist, but my anal-retentive accounting soul wants to be able to quantify this, and I am frustrated.