I always get about 1%-2% yield from my MHRB with a simple acid to base technique
and it gets better with practise.
If you want to improve it comes down to a couple of things:
1) quality of your material
2) creating a large surface for extracting (shredding)
3) quality base and acid work (ph (acid = 2)(base = 12)), cleanlisness(no mixing), amount(solvent to extracting mixture = 1:4 for me), shaking ( shake it like an idiot and keep it warm like a baby)
4)all your mixes have to be saturated but when it comes to forming crytals it is realy important.
Can be archived through evaportation and using the right amount of liquids from the start on.
5) I can smell the crystals even before they go in the freezer :'D.
6) Stay safe when working with this stuff.
Hope this helps.
PS: some people are concerned of the yellow goo.
For me the crystalls are always clean but the goo behind the crytals sticking to the wals of my glas is the stuff you realy want to mix into your spaceship.
You can scrape it off with a razor and because some people like it and some people dont it is realy hard to compare yield results(pure crystals are realy light like snowflakes and the dried yellow goo is realy solid and heavy)
Here my stuff (first pull 40g of bark)
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