Pucker Recipe Posted on March 29, 2019March 29, 2007 by admin Ingredients 1 shot whiskey1 part grapefruit juice Pour whiskey generously over ice in a whiskey sour glass. Add unsweetened grapefruit juice, 7-up (optional), and serve. Spread the love Related posts: Hemingway Daiquiri Recipe Italian Delight Recipe Pisco Sour #2 Recipe Slider Recipe