Depends on how you're extracting. For oil, from what I understand, people heat the oil and water in a crockpot together to keep it from burning. IDK...I'm new to oil. Budder I've done, bubble hash I've done. Never done Iso or oil.
i thought it might be to plump up plant matter to mitigate absorption of the oil...block absorption?
wouldn't lower heat prevent burning? besides, why is heat necessary to begin with?