Choose fruit, such as watermelon, cantaloupe, pineapple, mango, strawberries, or cucumber
Wash, peel, and chop the fruit as needed
Add the fruit to a blender
Add cold water
Add sugar or another sweetener if desired
Add lime juice if desired
Blend until smooth
Taste and adjust sweetness or water as needed
Strain through a fine mesh sieve if you want a smoother drink
Pour over ice
Serve chilled