Hitting frozen bugs shakes loose a mote every few hits.
Recipe
Snare + Kiln, both at their highest level, then open a chest
Hits per mote 4
Keep frozen. Best before dawn.
Emberloop is a free bullet heaven game for your browser, on a phone or a computer.
FAQ
How do you get Cold Storage in Emberloop?
Own Snare and Kiln at their highest level, then open a chest: they unite into Cold Storage.