Recipes Cocktails Dubious Manhattan Be the first to rate & review! Boka Kitchen & Bar, SeattleDubonnet red is a wine-based aperitif with a bittersweet flavor that comes from quinine, an extract of the cinchona tree bark that has been used as a healthy additive to fortified wines for centuries.Plus: Ultimate Cocktail Guide By Food & Wine Editors Updated on March 27, 2015 Print Rate It Share Share Tweet Pin Email Yield: 6 drinks Ingredients 4 ounces Dubonnet red 4 ounces sweet vermouth 16 ounces bourbon 1/4 ounce peach bitters 18 brandied cherries, skewered on 6 picks Directions In a pitcher, combine the Dubonnet red, sweet vermouth, bourbon and peach bitters. Cover and refrigerate until chilled, at least 2 hours. Stir and pour into 6 chilled coupes. Garnish with the skewered cherries. Rate it Print