Bison grass, scientifically known as Hierochloe odorata, is a perennial grass native to North America and parts of Europe. It typically grows in wet, grassy areas and is known for its tall, slender stems and distinctive aroma. The grass is often associated with the habitats of bison, which graze on it, contributing to the ecosystem's health. This grass is also used in the production of Żubrówka, a traditional Polish vodka flavored with its leaves. The unique flavor profile of bison grass adds a distinct taste to the spirit, making it popular among vodka enthusiasts.