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a cold smoker is just smoke with little to no heat.
.....to be a little more blunt than chop, a galvanized chamber (inside or out) for a heated cook chamber is NOT safe for preparing food....when galvanized steel is heated it releases zinc gas which is toxic if consumed. Just standing next to it while it is being heated will make you sick!!! If I happen to ”have to” weld a part with zinc I will only do so with a full blown respirator....
.ie, if the unit above is galvanized I personally would NOT use it for food prep of any kind.........
civilsmoker is dead on, not something I would use to smoke food in. a cold smoker has limited value most of the year, you need temps cold enuff to keep meat from going bad while picking up smoke flavor.