Once again, grass is legal. hard-to-forget flavor Pols toast as being the "best tasting vodka." But most importantly, to us, its now legal in all 50 states. They banned it in the US in 1978. But what they couldn't ban was the demand for this truly unique tasting vodka. What was once Bison Grass Vodka in now Zubrowka Bison Grass Vodka. Still "the one with the grass," Bison Brand serves up the same smooth,