Made from the finest select rye grain. Bison grass vodka. Since the 14th century, bison grass has been used to infuse a unique vodka,?ubrówka (say 'ZOO-BROOV-KA'), a singular spirit of supreme smoothness. Each bottle contains a blade of this grass, bringing a pale olive colour and freshness to the vodka. In a remote corner of Poland in the North Podlasie Lowland lies a mysterious place called Bia?owie?a, the last primeval forest in Europe, home to Europe's last remaining herd of bison and to a distinctively, aromatic plant - bison grass. Named in honour of the bison, this aromatic plant resists cultivation and, to this day, is still harvested by hand.