Dear Gene: You’re allowed to make concentrates that don’t require butane, like bubble hash, kief, QWISO hash from rubbing alcohol, and other concentrates extracted with water. As I’m sure you know, ...
Hash is relatively easy to make, and new extraction techniques utilizing dry ice and CO2 introduced in the late 80s have helped make it more available in the U.S. Back in the 80s, buying hash was easy ...
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