The most important drink is vodka. The first known written mention of the drink was in 1405 in "Akta Grodzkie", the court documents from the Palatinate of Sandomierz in Poland. At the time, the word vodka (wódka), referred to chemical compounds such as medicines and cosmetics' cleansers, while the popular beverage was called "gorzałka" (from the Old Polish "gorzeć" meaning "to burn"), which is also the source of Ukrainian "horilka" (горілка). The word "vodka" written in Cyrillic appeared first in 1533, in relation to a medicinal drink brought from Poland to Russia by the merchants of Kievan Rus'.