Sainte Trinite (Holy Trinity)

Chill a cocktail coupe glass in advance.

Prepare a twist of lemon zest for garnish.

Stir the cognac, elderflower liqueur, yellow Chartreuse, and a splash of orange bitters with ice until well mixed.

Fine strain the mixture into the pre-chilled coupe glass.

Express the lemon zest twist over the cocktail to release its oils, then use it as a garnish.