Sorta. Anything fatty tends to pick up flavors from the environment. Now, in the cold, those chemical reactions are slowed down, but they're not stopped. If you leave it there for a while, it'll pick up off flavors. Still generally safe to eat, but you won't like it.
How airtight is airtight? Cheap Ziploc bags or Tupperware won't be enough in the long run. Maybe if you used a pressure sealed preservatives jar. Those will need to be heated up in a pressure cooker, so butter will melt and reconstitute.
I haven't made weed butter, but id imagine it should keep for a really long time if there's a layer of endistrubed butter on top. Covering stuff in fat is an age old method of preservation.
Yea the cannibanoids break down in heat and make the high less fun and more zombie/sleepy after a year or two. There is also risk of mold or going too dry depending on storage conditions.
like the other person said, concentrates. That's why concentrates are so big in the cannabis market, fresh flower doesn't keep very long or sell at the kind of volume that edibles or pens made from concentrates do
Dried flower stays good for a VERY long time. I myself found some forgotten buds in those plastic orbit containers. Was few years old, still tasted and felt like fresh
Concentrates. Easy and safe ones to make at home are bubble hash or green dragon. One of my friends used to make BHO (butane honey oil), which can be quite dangerous.
Thanks. I made some butter once, I don't remember it being smelly. It was a small quantity though. And I didn't use coconut oil but actual butter, although I doubt this would change anything.