Step 1: Remove the rind and seeds of the melon and cut the pulp into chunks.
Step 2: Place the melon chunks in a blender, add sugar and 2 cups of water. Blend for 2 minutes at high.
Step 3: Pour the mixture through a strainer into a large pitcher, then add 6 more cups of water.
For the creamy version: Replace 4 cups of water with the 2 cans of condensed milk and add them to the melon mixture.