Cold Boiling N-butane?

[erkleextrcts]

so ive been hearing about (in specific terpsap) cold boiling off your butane (freezing the butane out of your product) any ideas of how this is achieved?

 

[Dunge]

I'd ask for a picture to clarify,
maybe a high res shot of a gob of terpsap?
Short of that, I need more words to know what the question is.

And let me welcome you to the farm.

 

[erkleextrcts]

thank you