1½ ounces Malibu (or other coconut-flavored rum)
½ cup coconut sorbet or gelato
1 ounce fresh lime juice
1 ounce coconut milk
Dusting of ground nutmeg
Combine all ingredients but the garnishes in a blender with ½ cup ice. Blend until smooth. Pour into a chilled cocktail glass. Garnish with the pineapple, and sprinkle the top with nutmeg.