I've had Agua Fresca several times but never tried to make it and for some reason today a watermelon agua fresca just popped into my head. We stopped off at a local farmers market and they had some decent watermelons out so the course was set. I have a few books with recipes for various agua frescas but none had watermelon. I searched a few sites and got a good idea of what was needed. Basically fruit, water, sugar and citrus. Some called for various spices but I was wanting a more pure watermelon flavor so this is what I came up with.
4 1/2 cups cubed ripe watermelon
2 cups water
2 tablespoons fresh squeezed lime juice
pinch of kosher salt
6 tablespoons of sugar or 1 tablespoon agave nectar
* sugar/nectar quantity depends on the sweetness of the fruit. Taste it first
before you add the sugar and taste as you add it. This one was
not very sweet so it took 6 tablespoons to get it where I wanted it.
Puree' the watermelon in a blender until smooth. Strain through a mesh sieve into a pitcher or bowl to get all the chunks out. Add the lime juice, water and sugar. Mix together until sugar dissolves. Taste and adjust the sugar for sweetness.
Chill for an hour. Serve over ice garnished with a lime wedge. Its also great mixed 2 parts agua fresca and 1 part lemon/lime soda.