What is the difference between a Bison and a
Buffalo?
You can't wash your hands in a Buffalo !
Seriously though, there are also Bison native to Europe.
The last remaining herds live in Poland. There they eat a paticular herb. The Polish then put this herb in vodka
and call the vodka Bison vodka. It gives the vodka a slightly greenish tint and a very distinctive flavour.
It's best drunk neat followed by a sup of apple juice.
When drinking copius amounts of this a few years ago in Germany my friends would toast "Tatanka !", aparently taken from Dances with wolves.