Summertime Sazness

Chill the cocktail coupe thoroughly.

Rinse the inside of the glass with Yellow Chartreuse, ensuring an even coating, then discard the excess.

In a mixing glass, combine the Old Tom Gin, Demerara syrup, Peychaud's bitters, and grapefruit bitters.

Fill the mixing glass with ice and stir until well chilled and properly diluted.

Strain the mixture into the prepared, chilled coupe.

Express a twist of lemon peel over the drink to release its oils, then discard the peel.