I know this thread is pretty old, but I was reading it and can't help but comment with the (not so) obvious answer:Based on your descriptions, what you probably saw was your friend recrystallizing some dope in a jar, which could have been for purity or to have the goods co-crystallize with some MSM. My bet's on the latter considering you didn't seem too impressed, but I wasn't there. They could just suck at purifying lol.Also, meth is meth, regardless of how it's cooked. Always remember, trash in = trash out. As long as all the ingredients are high quality it'll all be fine. I've had some shit made in a plastic gatorade bottle that'd knock your dick in the dirt. If nothing, nearly any dope can be salvaged with a good ole 'tone wash.One last thing, I've never heard of anybody cooking dope in a glass jar that they let simply freeze overnight. If it WAS a "one pot" method, they'd have certainly used a plastic bottle, which would allow for greater pressure build-up in the vessel itself (kinda necessary I believe). Everything you mentioned points at a simple re-crystallization. Hope this helps somebody~!