A few dashes of grapefruit bitters can put a so-so sparkling wine cocktail into fabulous territory or turn a limp Paloma or Gin & Tonic into a bright and balanced thing of beauty. Grapefruit bitters can add a nice finishing touch to those kind of "brown" drinks, where it really shines is the usually bitters-free zone of sparkling, light, refreshing and fruity drinks, the ones usually made with gin, tequila or rum. It's not just for cocktails either. A few dashes can also liven up plain soda water, too!