Blueberry Vodka Martinis

Step 1
To make blueberry vodka: Pour about 1/3 of the bottle of vodka into a holding container; set aside. Score each blueberry with a small nick and place into the vodka bottle. Fill the vodka bottle with reserved vodka until just below the neck. Add just enough raspberry liqueur to top off the bottle. Let sit in a dark place for 2 weeks.

Step 2
To make martini: Fill a cocktail shaker with ice. Add 2 parts blueberry vodka, 1 part raspberry liqueur, and a dash of lime juice to the shaker. Shake vigorously and strain into a glass. Garnish with twist of lime zest.