Recipes Tart Gin Cooler (Gin with Grapefruit) Be the first to rate & review! This is a simple, refreshing drink, with flavors so complex you won't quite believe your taste buds. Cocktail Party Recipes By Gary Haidin Regan and Mardee Haidin Regan Updated on February 6, 2017 Print Rate It Share Share Tweet Pin Email Yield: 1 12-ounce drink Ingredients Ice cubes 2 ounces London dry gin 2 ounces fresh pink grapefruit juice 3 ounces tonic water 2 dashes Peychaud's bitters (see Note) Directions Fill a collins glass two-thirds full of ice cubes. Pour in all of the remaining ingredients and stir to blend. Notes If you can't find Peychaud's bitters in stores in your area, you can order it from Sazerac Company at 800-729-3722. Rate it Print