Boina Roja

1 1/4 oz extra aged white rum
3/4 oz white rum
1 tsp powdered sugar
2 - 3 dashes grenadine syrup
juice of 1/2 limes

Pour rums, sugar and grenadine over crushed ice in a small highball glass, and stir well. Add lime juice, garnish with a mint sprig and a cherry, and serve.