Zwack is a Budapest, Hungary-based company that makes liqueurs and spirits. The company produces an 80 U.S. proof herbal liqueur known as Unicum from a secret blend of more than forty different herbs and spices. Unicum is known as one of the national drinks of Hungary. The company is also a distributor of a range of international brands such as Johnnie Walker, Baileys, Smirnoff, Hennessy and Gordons. Zwack has been listed on the Budapest Stock Exchange since 1993. Wikipedia