The name "Canned heat" comes from people drinking "canned heat" (aka we call it a sterno today) to get drunk/high. Canned heat is the little alcohol based things you put under a buffet chafer to get it warm. Today (I used to work in the catering industry) they have warning about the canned heat causing blindness. Back in the day people would drink/eat this, and would sometimes become blind (cheaper than boo's) This is way so many blues player were blind.
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