8 oz BAR KEEP aromatic bitters are a unique collaboration between Greenbar Collective and some of the most talented bartenders in the U.S. This collection represents the return of a lost craft in bartending, adding complexity and the finishing touch to many drinks. A Few dashes of Messrs Stemmler and Haarstd'sbitters, made with savory herbsand spices, will add depth and aroma to your favorite cocktail, soda or dessert.