This Brännvinspolska is not a polska at all. A polska is in 3/4 time, while this is in 2/4.
Brännvin (close translation brandy) was the common hard liquor consumed by the common people in the old days, and the name may imply a “drunken polska” in the wrong rhythm.
In the province of Skåne this was a relatively common kind of dance, akin to the Angläs, Engelska, or British Hornpipe.
This tune comes to us from the repertoire of a Fiddler named dLorens Brolin, who lived from 1818 to 1890. He came from a fiddling family.
He was interviewed for the great collection of Swedish fiddle tunes “Svenska Låtar”, and this is in the Skåne edition, #1004.
Here is a YouTube video (apologies for the poor visual quality) of a group of Skåne musicians playing this Brännvinspolska.