I tried overnighting fish to Southern California. USPS messed something up, and our So Cal cousins got a batch of 90 degree mush.

Interesting post Bob R, 40 to 60 hours is a long time. I might experiment with a voltage regulator a bit. Do you do this cold smoking in a Big Chief? How many pans of smoke do you run through?
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WDFW - Turning outdoorsmen into golfers since 1994.