Chill the Glass:

Start by chilling a cocktail glass. Fill it with ice water and set it aside while you prepare the drink.

Mix the Ingredients:

In a cocktail shaker, combine the Cognac, St. Germain, Crème de Mure, lemon juice, and simple syrup.

Fill the shaker with ice, covering the liquid completely.

Shake:

Secure the lid on the shaker and shake vigorously for about 15 seconds. The goal is to chill the mixture thoroughly while slightly diluting it with the melting ice to balance the flavors.

Prepare the Glass:

Empty the ice water from your cocktail glass and strain the cocktail mixture into the glass. Use a fine mesh strainer to ensure no ice shards enter the drink.

Garnish and Serve:

Garnish with fresh blackberries. You can skewer a few blackberries on a cocktail pick or simply drop a couple into the drink.

Optionally, you can add a twist of lemon peel for an extra zesty aroma.

Enjoy:

Serve immediately and enjoy the rich, nuanced flavors of your Blacker the Berry cocktail.