1 oz of white creme de cacao (or chocolate liqueur)
1/2 oz of white rum (or Light Rum)
1 tbsp of pineapple
1 tsp of grenadine syrup
1 oz of sweet sherry (or dark sherry)
2 oz of Pineapple Juice
Blend ingredients in a highball glass until smooth. Add three-quarters of a glassful of crushed ice and blend again briefly. Garnish with a pineapple chunk and a cherry, and serve with straws.