Pruno

thumb|right|A jug of contraband prison wine made from oranges, confiscated from an inmate

Pruno, prison hooch and prison wine are terms used in the United States to describe an improvised alcoholic beverage. It is variously made from apples, oranges, fruit cocktail, fruit juices, hard candy, sugar, high fructose syrup, and possibly other ingredients, including crumbled bread. Bread is incorrectly thought to contain yeast for the pruno to ferment. Pruno originated in US prisons, where it can be produced with the limited selection of equipment and ingredients available to inmates. It can be made using only a plastic bag, hot running water, and a towel or sock to conceal the pulp during fermentation. The end result has been described as a "bile-flavored wine cooler". 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).