Siwucha (pronounce: [ɕivuxa]) is an incompletely rectified vodka (raw vodka) from Poland. The name derives from the siwy (ash grey) color of the liquid due to Tyndall effect of the colloid emulsion of residual fusel oil. History Siwucha is one of the generic Slavic words for a moonshine. In Polish it denotes a home-brew vodka or rotgut used for its preparation. The Russian term сивуха denotes also its poor quality. The name was first used as a vod… (More on Siwucha)