Thuir Sour

Use 2:1 rich simple syrup for its listed portion.

Chill a cocktail coupe to prepare for serving.

Create an orange zest twist for garnishing later.

Shake all ingredients with ice, then strain the mixture back into the shaker.

Dry shake the mixture without ice.

Fine strain the cocktail into the chilled coupe glass.

Express the orange zest twist over the drink and place it as a garnish.