Wisniak (Polish Cherry Cordial) Wisniak is the best and most popular semi-sweet cherry liqueur (with a low alcohol content) in Poland. Wisniak is made from fresh cherries with natural flavor and fragrance. Wisniak has a pleasing, mild bouquet, sweet cherry taste and noticeable flavor of almonds. It can be served straight or as a component of cocktails. It is highly appreciated by ladies who avoid strong alcoholic drinks. Best served at room temperature in liqueur glasses with coffee and desserts.