Dekuyper® Berry Fusion Pucker® Sweet & Sour Schnapps. The brand bartenders trust. 30 Proof. 1 Liter. Dekuyper Berry Fusion Pucker® is a vibrant blend of sweet and sour flavor. Add any Pucker product to your favorite drink to create a cocktail, or chill and serve as a shot for a mouth-puckering experience. Dekuyper is committed to providing you with cordials of the highest quality. We use all-natural flavors, and our products do not contain high fructose corn syrup. Under license from De Kuyper Royal Distillers, Schiedam, The Netherlands. www.dekuyperusa.com.