Frozen limeade concentrate,
thawed and undiluted
Rub rim of cocktail glass with wedge of lime. Place salt in saucer; spin rim of each glass in salt. Set prepared galsses aside. Combine limeade concentrate, tequila, and Triple Sec in container of an electric blender; blend well. Add enough ice cubes to make mixture measure 3 1/2 cups in blender; blend well. Pour beverage into prepared glasses; garnish with a slice of lime, if desired.