In this video, you’ll see how to make watermelon agua fresca, Chef John’s favorite summertime drink. It’s so refreshing and restorative. And incredibly easy to make. You’ll start with a seedless watermelon. Blend it up with a little cold water and then sweeten it with sugar water to taste. That's all there is to it! Serve ice cold over ice cubes. Watch the video, then get the recipe for Chef John's Watermelon Agua Fresca. Incredibly refreshing on a hot summer day.