Watermelon is in season and this cocktail is my favorite way to use it with tequila. It's frozen and spicy at the same time and perfect for a hot summer happy hour.
I start in the morning by juicing two of those mini, seedless watermelons and those will provide enough juice for 4 drinks. Then I pickle the rinds for my garnish. At happy hour I'll sprinkle Tajin on the remaining pickled watermelon and serve it with the margarita and some guacamole and chips. Heaven.