Pruno

It can be made using only a plastic bag, hot running water, and a towel or sock to conceal the pulp during fermentation.

[2] Depending on the time spent fermenting (always balanced against the risk of discovery by officers), the sugar content, and the quality of the ingredients and preparation, pruno's alcohol content by volume can range from as low as 2% (equivalent to a very weak beer) to as high as 14% (equivalent to a strong wine).

In 2004 and 2005 botulism outbreaks were reported among inmates in two California prisons; the Centers for Disease Control and Prevention suspects that potatoes used in making pruno were to blame in both cases.

During jail and prison inmate cell searches, correctional officers remove excessive or unauthorized food items to halt the production of pruno.

Another recipe for pruno can be found in Michael Finkel's Esquire article on Oregon death row inmate Christian Longo.