Top Shelf Margaritas on the Rocks

Make a simple syrup by stirring together and bringing 2/3 cup sugar and 1/3 cup water to a boil until the sugar dissolves; set aside to cool.

Make the sour mix by briskly stirring together the 2 1/4 cups water lemon juice 1/4 cup sugar and egg white; set aside.

Combine the ice cubes tequila Cointreau lime juice 1 ounce of the simple syrup and 1/2 cup of the sour mix in a pitcher; stir vigorously to infuse the ice 8 to 15 seconds.

Run a lime wedge along the rim of an 8-ounce glass. Spread the kosher salt onto a plate and dip the glass rims in the salt to coat; add ice if desired. Strain the mixture from the cocktail shaker into the glass to serve.