Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
 100      milliliter    pineapple juice
 100      milliliter    orange juice
                        a dash of fresh lime juice
                        ice cubes as required
   1                    pineapple shell -- (or a pineapple
                        -- halved and the
                        -- flesh scooped out)
  50      milliliters   white rum

Preparation:

BLEND pineapple juice, orange juice and fresh lime juice on ice. Pour into pineapple shell. Float white rum on top. Serve with a straw.