Blueberry-Bourbon Shrub

Puree blueberries sugar and red wine vinegar in a blender. Add peppercorns. Chill shrub covered 4 hours to 2 days. Strain.

In a cocktail shaker half-filled with ice combine 2 fluid ounces blueberry shrub and bourbon. Shake until very cold.

Strain into an ice-filled pint glass. Top with ginger beer. Garnish with additional blueberries or a lime wedge.