• crushed pineapple in juice (unsweetened, canned)
  
• Cuarenta y Tres (43) Liquor (it's a vanilla liquor from Spain)
  

Pre-prepare pineapple by pouring contents of can into icecube trays
and freezing. The icecube trays I have make cubes about 1"x1"x1.5"
so adjust the following if yours are bigger or smaller.

Note: If you stick toothpicks in the pineapple cubes they make nice
popsicles.

About 30 minutes to a couple hours before serving, blend (in blender
or food processor) 5 pineapple cubes and 2-3 oz. of 43 liquor for
each serving. Spoon into dessert glasses and refreeze.