ZU vodka, known in the rest of the world as Zubrowka, is starting to appear in more serious drinks than just mixed with the usual apple juice.
Oddly enough, in each of these better drinks in which I've seen ZU used, it has been used in concert with Cocchi Americano.
At Providence in Los Angeles:
ZU Bison Grass Vodka, Cocchi Americano, Gruner Vetliner wine, and celery bitters
At AQ restaurant in San Francisco:
Zubroska Bison Grass Vodka, Cocchi Americano, Meyer Lemon, Rosemary Shrub
At Blackbird in San Francisco:
Zu vodka, Cocchi Americano, Apple Juice, Celery Bitters