established by Princess Lubomirska and later operated by her grandson, Count Alfred Wojciech Potocki. The Vodka Industry Museum, located at the park of the Potocki country estate has an original document attesting that the distillery already existed in 1784. Today it operates as "Polmos Łańcut". Vodka production on a much larger scale began in Poland at the end of the 16th century, initially at Kraków, whence spirits were exported to Silesia before 1550. Silesian cities also bought vodka from Poznań, a city that in 1580 had 498 working spirits distilleries. Soon, however, Gdańsk outpaced both these cities. In the 17th and 18th centuries, Polish vodka was known in the Netherlands, Denmark, England, Russia, Germany, Austria, Hungary, Romania, Ukraine, Bulgaria and the Black Sea basin. Early production methods were rudimentary. The beverage was usually low-proof, and the distillation process had to be repeated several times (a three-stage distillation process was common). The first distillate was called brantówka, the second was szumówka, and the third was okowita (from aqua vitae), which generally contained 70–80% ABV. Then the beverage was watered down, yielding a simple vodka (30–35% ABV), or a stronger one if the watering was done using an alembic. The exact production methods were described in 1768 by Jan Paweł Biretowski and in 1774 by Jan Chryzostom Pasek. The late 18th century inaugurated the production of vodka from various unusual substances including even the carrot. Though there was a substantial vodka cottage industry in Poland back to the 16th century, the end of the 18th century marked the start of real industrial production of vodka in Poland (Kresy, the eastern part of Poland was controlled by the Russian empire at that time). Vodkas produced by the nobility and clergy became a mass product. The first industrial distillery was opened in 1782 in Lwów by J. A. Baczewski. He was soon followed by Jakub Haberfeld, who in 1804 established a factory at Oświęcim, and by Hartwig Kantorowicz, who started producing Wyborowa in 1823 at Poznań. The implementation of new technologies in the latter half of the 19th century, which allowed the production of clear vodkas, contributed to their success. The first rectification distillery was established in 1871. In 1925, the production of clear vodkas was made a Polish government monopoly. After World War II, all vodka distilleries were taken over by Poland's Marxist–Leninist government. During the martial law of the 1980s, the sale