Our Bizon Grass is harvested in early summer within the Bialowieza forest in Eastern Pol&. The grass is harvested in full bloom then dried naturally. The dried grass is spread on screens & then gently heated & washed over with high strength alcohol for several days to 'draw' out the aromatic essence. The distinctive aroma & natural colour of Davna Bizon is a result of this process. This ' Bison Grass Extract' is then blended with Polish pure grain vodka until the perfect colour, aroma & taste are achieved. The vodka is then left to rest for several days & is then filtered & bottled at 40% vol, the optimum strength to fully enjoy the character of this unique vodka. Our base vodka is predominately Polish rye grain with the addition of a small quantity of mixed cereals.