If you want authentic prison spud juice, add some chunks of potato in there for extra fermentation. Store next to a heat source and make sure to vent it regularly. You can also make it in bulk, use 5 gallon trash cans lined with garbage bags, then strain and pour out into pop bottles for individual sale. You can also make a Bloody Mary equivalent with spaghetti sauce mix as a base. The key is as much stolen sugar and other ingredients from the kitchens as you can get your hands on.

I've also frequently found 60-gallon bin liners inside duffel bags, half full of the brew, with a plastic straw arrangement so it vents itself.

I'm sorry... 19 years working inside has made me a little cynical about this subject. Maybe more than a little.