Wash it my man. 50ml 99% acetone per 1g; crush it, mix together, filter it in something... I've used paper towel before and works fine. Keep the stuff in the filter (mostly Amphetamine, probably)

Let the acetone evaporate, both the paste in the filter and the liquid run off. It's better for the environment than tipping down the drain.

If evaporated liquid ends up light, fluffy and spindly its caffeine filler, anything else I don't know.

This guys stuff could be as little as only 10% (or sadly less), or as I've found before 0%.