Dekuyper® Sour Apple Pucker®. Sweet & sour schnapps. Imitation liqueur. The brand bartenders trust. 30 Proof. 750 ml. Dekuyper® Sour Apple 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. Our products do not contain high fructose corn syrup. Under license from De Kuyper Royal Distillers, Schiedam, The Netherlands. For additional recipes: www.dekuyperusa.com.