Cardamom-lemongrass syrup lends a bit of Thai spice to a fresh cocktail made with rum and coconut.
FOR THE CARDAMOM-LEMONGRASS SYRUP
½ cup sugar
4 cardamom pods, crushed
1 stalk lemongrass, trimmed and thinly sliced
FOR THE COCKTAIL
3 sprigs Thai basil
1 oz. fresh lime juice
1½ oz. light rum
1 oz. cardamom-lemongrass syrup
½ oz. crème de coconut
Club soda, for topping
Make the cardamom-lemongrass syrup: Boil sugar and ½ cup water in a 1-qt. saucepan until sugar is dissolved. Remove from heat and add cardamom and lemongrass; let cool and then strain. Makes 1 cup. Syrup will keep, refrigerated, for up to two weeks.
Muddle 2 basil sprigs with lime juice in a cocktail shaker. Add rum, crème de coconut, syrup, and ice. Shake vigorously and strain into a glass mug; top with soda and garnish with remaining basil sprig.