Muddle Sage: In a glass or pitcher, gently muddle the sage leaves to release their natural oils.
Blend Blackberries: Add blackberries to a blender with a splash of water and blend until smooth.
Strain Mixture: Pour the blended blackberry mixture through a fine mesh strainer to remove seeds and pulp.
Combine: In a large pitcher, mix the blackberry juice, fresh lemon juice, simple syrup (or honey), and cold water (or sparkling water).
Serve: Add ice cubes to glasses, pour the mixture over ice, and garnish with additional blackberries and sage leaves.
Enjoy: Stir well before drinking and enjoy the refreshing flavor!