The bottle states the following:

Most vodkas are made from the fermented mash of grain, whereas Luksusowa vodka, meaning luxurious and pronounced LOOK-SOO-SO-VAH, is distilled from potatoes. The result is a perfectly smooth vodka. Since its creation in 1928 in Poland, Luksusowa has maintained the highest production standards (its name literally meaning the highest quality spirit). 28 international gold medals crown its quality. Its perfect balance and smoothness makes Luksusowa ideal for cocktails, such as a Classic Martini. Luksusowa ‘“ the authentic luxury Polish vodka.