DeKuyper? Pucker? Sour Apple Schnapps Liqueur puts the sour apple in the world famous Sour Appletini. Add a splash of bold flavor to your cocktails with this fruity liqueur. A sweet and sour sensation, this liqueur bursts with sweetness followed by a mouth-puckering sourness. Great for mixing, Pucker? Sour Apple makes a great foundation for green apple inspired martinis, punches, daiquiris, and more.