Chill 4 16-ounce goblet or pint glasses in the freezer.
Cut limes into quarters lengthwise and then cut each section in half.
Place limes and Duplin Piña Colada in a blender container. Pulse just until the mixture is roughly blended but not longer than 60 seconds. Overblending will bring out too much of the limes’ bitterness.
Strain lime and wine mixture into a pitcher. Rinse the blender. Return the strained liquid to the blender. Add the sweetened condensed milk. Fill blender container with ice. Whirl at high speed until frothy but not slushy.
Pour mixture immediatly into chilled glasses. Garnish with pineapple slices. Makes 4 servings.