Metropole
Orange zest twist (or Luxardo Maraschino cherry)
STIR all ingredients with ice and strain into chilled glass.
[['6 cl', 'Rémy Martin 1738 Cognac'], ['3 cl', 'Martini Extra Dry vermouth'], ['2 dash', "Peychaud's or other Creole-style bitters"], ['1 dash', 'Orange Bitters by Angostura'], ['0.5 cl', 'Sugar syrup (65.0°brix, 2 sugar to 1 water rich syrup) (optional)']]
[['6 cl', 'cognac'], ['3 cl', 'dry vermouth'], ['2 dash', "peychaud's bitter"], ['1 dash', 'angostura'], ['0.5 cl', 'sugar syrup']]