Hi there I'm wondering how to store changa long term.

Should I use Ziplock or Glass jar?
Should I use Freezer or Cupboard?

Thanks

glass jar is good but not too big because of air. ziplock bag is probably better for longterm cos you can squeeze all the air out

I'm no expert on the chemical breakdown of DMT or changa, but offering what I do know.

Plastics breath far more then glass, and ziplocks are far from air tight, a food saver with a decent bag is far better then a ziplock.
Amber glass with inert gas or vacsealed would be the best, for both UV light and oxygen.

Regarding the freezer, the worry about this would be condensation, using a desiccant and not changing the temperature rapidly I think would be smart.

The last dmt extraction I did was almost a year ago and it is still as white as when I finished drying it today.

I store min vacuum sealed in a baggie wrapped with dessicant and de-oxidizing packs in carbon paper (anything dark will work).

I always smoked my changa before I had to worry about storing it, but im sure this would work just as good for the changa