[quote:57b5e45484="sa_mull"]Just wondering if anyone has encountered this... after SWIM re-heated his spice and added warm solvent to clean the crystals, it was left to cool, then put in the freezer. When he took it out, filtered it, and instead of having a yellow glop on the bottom and crystals on top, it was one hard chunk on the bottle of the glass. no crystals, more like a hard chalk. I'm sure it's still good, but just wondering what I should do. Re-heat and try again? or warm it and pour off the clear solvent and clean. thanks for the help.[/quote:57b5e45484] Simply re heating and adding more solvent seems to be the first half of recrystalizing. However, when you let it cool you have to let the solvent pull the DMT out and let the "dirty product sink to the bottom." You should have clear liquid on the top and yellow gunk on the bottom. Pour the clear liquid off into a dish to be put into the freezer for a freeze precip stage (oh ps you should be using a shot glass or something small). let it sit in the freezer over night, in the AM pour off the remaining naptha and let it sit out and dry up. Crystals should be visible when you are pulling it out of the freezer and dry to shape once you pour off the naptha. This is just a quick explination, read how to recrystalize to do it better. Hope this helped, seems that that was what you were trying to do. Good luck.