Pruno is an alcoholic beverage mae from apples and/or oranges, fruit cocktail, ketchup, sugar, and possibly other ingredients including bread. It originated in (and remains largely confined to) prisons, where it can be produced cheaply, easily, and discreetly. The concoction 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 colorfully described as a "vomit-flavored wine-cooler", although it should be noted that flavor is not the primary objective. Depending on the time spent fermenting, 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 weak beer) to as high as 14% (equivalent to a strong wine).