01 -
In a cocktail shaker, muddle 4 blackberries with 0.75 fl oz fresh lime juice until the berries break down, about 10 to 20 seconds.
02 -
Add 2 fl oz mezcal, 1 fl oz Concord grape juice, and 0.75 fl oz simple syrup to the shaker. Fill with ice, cover, and shake vigorously for 20 seconds until the shaker is frosty.
03 -
Double strain the mixture through a fine-mesh strainer into an ice-filled glass to ensure a smooth, seedless cocktail.
04 -
Top off the cocktail with ginger beer and garnish with a bay leaf and additional blackberries.