What is the name of this traditional Slavic and Baltic fermented beverage that is used for a flavor in Fruktime and commonly made from rye bread whose colour contributes to the resulting colour of the drink?
Fruktime Fruktime - a series of the carbonated soft drinks which are on sale in Russia and Ukraine, distribtuted by The Coca-Cola Company. It is made in various flavouring variants: Buratino (caramel), Tarhun (tarragon), Hand bell, Lemonade, Pear, Strawberry, Apple, Cream soda, Kvass, and Baikal (Natural).
Pruno Pruno, or prison wine, is an alcoholic beverage variously made from apples, oranges, fruit cocktail, candy, ketchup, sugar, milk, and possibly other ingredients, including crumbled bread. Bread supposedly provides the yeast for the pruno to ferment. Pruno originated in (and remains largely confined to) prisons and jails, where it can be produced with the limited selection of equipment and ingredients available to inmates. 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 "bile flavored wine-cooler", although flavor is often not the primary objective. Depending on the time spent fermenting (always balanced against the risk of discovery by the 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).