Juice the cubed watermelon, either by putting the cubes through a juicer, or pureeing in a blender and pouring through a large sieve to remove the pulp and into a pitcher. Refrigerate watermelon juice.
Juice the cantaloupe, either by putting the cubes through a juicer or pureeing the cantaloupe cubes in a blender or food processor and running through a large sieve to remove the pulp. Place the cantaloupe juice in a large saucepan, along with the lemon juice, sugar, and 2 cups water.
Bring the mixture to a boil. Let boil for 1 minute and remove from heat.
Transfer the cantaloupe/lemonade base to a pitcher or container and chill in the refrigerator.
To make the lemonade:
Fill a glass ¼ full with the cantaloupe/lemonade base. Fill the glass with ice. Pour the watermelon juice carefully over the ice until the glass is ¾ full. Watermelon juice will sit on top of the lemonade base. Pour water into the glass until the glass is full. Serve.
Mix together before drinking.
Nutrition Information
Serving size: Serves 12-15
Recipe by The Kitchen McCabe at https://www.thekitchenmccabe.com/2014/05/27/watermelon-cantaloupe-lemonade/