1.5 oz. Heroe de Leon Reposado
3 oz. Sweet & sour mix
1 oz. Grand Marnier
1 oz. Cointreau
.75 oz. Lime juice
Lime garnish
Shake tequila, Cointreau, sweet and sour mix, and lime juice with ice. Pour over ice in salt-rimmed margarita glass. Float Grand Marnier on top. Garnish with slice of lime.