Wanted to post this because it is so tasty, and because it's watermelon season. :o) It is very refreshing on a hot day, I just made it when hubby came in from mowing the lawn and he said it went down a treat and cooled him right off. The watermelon I bought is very sweet, so I omitted the sugar, and I used lemon instead of lime. And I blended it in the vitamix and didn't strain it.

2 cups cold water
2 cups watermelon (rind removed), seeded and chopped*
2 tablespoons granulated sugar**
Juice of 1/2 lime (no more than 1 tablespoon)
Ice cubes or crushed ice (optional)

* To choose a watermelon, look for one that is firm, heavy for its size, free of bruises and cuts and creamy yellow on the side that sat on the ground as it grew. Cut watermelon can be stored, covered, in refrigerator for 3 to 4 days.

** The amount of sweetener needed will vary depending on the sweetness of the fruit you are using. Some may not require any at all. Sugar substitutes may be used to reduce calories further.

Preparation:

Cut the watermelon into roughly 1-inch cubes. If you're using other fruits, prepare them accordingly, removing seeds or skins and cutting into small pieces if necessary.

In a blender or food processor (I used my Vitamix), combine water, watermelon, sugar, and lime juice until smooth. NOTE: Traditionally an authentic aqua frescas are made without blenders and done by simply mashing the fruit with a fork or masher before adding the water and sweetener.

Pour mixture through a strainer into a pitcher, forcing through most of the pulp. Chill at least 30 minutes before serving. Serve with or without ice cubes.

As a decorative touch, add slices or chunks of matching fruit just before serving.

Makes 2 servings.

Here is a link that might be useful: Watermelon Agua Fresca