Puerto Rican Rum Punch - cooking recipe

Ingredients

2/3 cup fresh lime juice
1/3 cup superfine sugar
1 cup golden rum
1/4 cup orange liqueur
1/4 cup grenadine
1 (750 ml) bottle champagne or (750 ml) bottle sparkling wine, like spanish cava
fresh pineapple chunk, for garnish

Preparation

In a large pitcher, combine the lime juice and sugar and stir briskly until the sugar is dissolved.
Add the rum, orange liqueur and grenadine and chill the rum mixture for about 1 hour.
Just before serving, add the sparkling wine and pineapple chunks and serve in punch glasses.