Sip into something summery with this old fashioned featuring blackberry simple syrup and black walnut bitters. It's a quick and easy old fashioned riff to delight your senses.
Combine the bourbon, blackberry simple syrup and bitters in a mixing glass and fill with ice. Stir until well-chilled and strain into an old fashioned glass with one large ice cube. Garnish with fresh or frozen blackberries.
Keyword blackberry, bourbon cocktail, old fashioned