You're My Boy Blue

Muddle the blueberries in a cocktail shaker to release their juices and flavors.

Add the bourbon, elderflower liqueur, freshly squeezed lemon juice, and simple syrup to the shaker.

Fill the shaker with ice and shake vigorously until well-chilled.

Double strain the mixture into a chilled cocktail coupe to ensure a smooth texture.

Garnish with a twist of lemon peel, expressing its oils over the drink before placing it on top.