I’m taking break from tea time today to discuss another beverage: Agua Fresca. Tidy rows of huge barrel-shaped jars filled with Aguas Frescas color street stalls and markets in Mexico. These “fresh waters” are infused with fruits, flowers, grains or seeds. They are becoming popular here, too, not only for their fresh taste but also because they are a healthy alternative to sodas. Here, aguas frescas are most often made from fruit. We’re having a very good strawberry season, so strawberry...