Combine all ingredients (except cherry) with 1 cup of crushed ice in an electric blender.
Blend at a low speed for a short length of time.
Pour into an old-fashioned glass, add the cherry on top, and serve.

Old-fashioned glass

  • 2 oz Light rum
  • 1 tblsp Passion fruit syrup
  • 1 tblsp Lemon juice
  • 1 tblsp Lime juice
  • 1 Cherry