Black Hawk

1. In a cocktail shaker, muddle the fresh blackberries until they release their juices and become slightly mashed.
2. Add bourbon, blackberry liqueur, fresh lemon juice, and simple syrup to the shaker.
3. Fill the shaker with ice cubes, close it tightly, and shake vigorously for about 15-20 seconds to chill and mix the ingredients.
4. Strain the cocktail into a rocks glass filled with fresh ice cubes.
5. Garnish with a lemon twist by twisting a strip of lemon peel over the glass to release its oils, then drop it into the drink.
6. Serve immediately and enjoy the refreshing and fruity Black Hawk cocktail!

Note: You can adjust the sweetness of the cocktail by adding more or less simple syrup, depending on your preference.