ZU Bison Grass Vodka begins as a luxury Polish vodka made from the finest select grains of rye that fill the spirit with a rich, natural sweetness. It is distilled four times using a unique double-step process to deliver supreme smoothness. To make it an authentic Zubrowka, each bottle of this pristine vodka is infused with the essence of bison grass, which imparts a pale olive color, unparalleled freshness and fragrance, and a lingering, subtly sweet hint of fruitiness.