Rodrigo's 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', 'Reposado tequila (100% agave)'], ['3 cl', 'Grand Marnier or other cognac orange liqueur'], ['2 dash', 'Margarita Bitters'], ['2.25 cl', 'Lime juice (freshly squeezed)'], ['1.5 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup)']]
[['4.5 cl', 'tequila'], ['3 cl', 'cognac'], ['2 dash', 'margarita bitters'], ['2.25 cl', 'lime juice'], ['1.5 cl', 'sugar syrup']]