To make this drink suitable for non drinkers, omit alcohol and increase the pineapple juice to 1 cup. I like to add the ice to the blender also..n drink it like a slushy.
- Place the watermelon, pineapple juice, rum, liqueur and grenadine in the jug of a blender and blend until smooth.
- Divide the ice among serving glasses.
- Pour over watermelon mixture to serve.