When I was in college, I used to visit this little hole in the wall restaurant almost everyday. It was on my way to class, and they served big glasses of the most amazing, intensely flavored aguas frescas for only a dollar. They always had a variety of flavors on hand: strawberry, cantaloupe, watermelon, mango, tamarind, etc. And each gulp was like biting into a piece of perfectly ripe fruit. Now, on days like this, when the summer heat becomes almost unbearable, I long to return to that restaurant (now some six hundred miles away) for a tall, thirst quenching glass. Luckily for me, it is much easier to simply make some myself here at home. I start by filling my blender with diced fresh watermelon, and then adding enough cold water to bring the blender to capacity (about 2-3 cups). I then add anywhere from two tablespoons to a third of a cup of sugar, depending on how sweet the watermelon is (this one was pretty sweet). Run the blender until the mixture is smooth, then strain the beautiful pink liquid through a fine mesh strainer, to remove all of the fruit pulp. Add the juice of one lime and a large pinch of salt, and chill it in the refrigerator. You will want to repeat this process several times if you are making a pitcher (as I typically am). (You can dilute this drink as much as you would like with more cold water to stretch it further, but I like mine to be pretty strongly flavored.)Serve it over ice, with a garnish of watermelon and fresh mint, and you have a perfect beat the heat summer drink which is sure to satisfy. Cheers!