Cadillac Margarita (AKA Grand Margarita)
Lime wedge & half salt rim (optional)
SHAKE all ingredients with ice and fine strain into chilled glass.
[['4.5 cl', 'Patrón Reposado tequila'], ['3 cl', 'Grand Marnier or other cognac orange liqueur'], ['2.25 cl', 'Lime juice (freshly squeezed)'], ['2 dash', "Difford's Margarita Bitters (optional)"]]
[['4.5 cl', 'tequila'], ['3 cl', 'cognac'], ['2.25 cl', 'lime juice'], ['2 dash', "difford's margarita bitters"]]