I have not tried it cold, but I think it would take more time and bud. It will work if you cook it, different high than butter or milk too.
heat isnt necessary, a longer soak time will make up for not heating.
Awsome! I'm curious how it might turn out using bubble hash. I've never tried anything like that without using heat. The extraction might be possible without using heat, but the heat is whats necessary to activate the cannabinoids to get the desired high.
I've made salad oil lot's of times. The trick to getting the best extraction is to grind dried and cured bud, finely with a coffee grinder and activate the cannabinoids by heating.
I boil water in a small pot and sit a pyrex measuring cup inside with my oil/bud mixture. It takes about 1 hour to get the best extractions. I use about 3 grams/cup of oil.
A 1/2 tsp is all ya need, nudge - nudge, wink - wink, say no more....
There is some active THC in buds but there is also a carboxylated form of THC that can be made more active through heat (which decarboxylates the compound into THC). I have heard of people using cold-infused olive oil even with just industrial hemp