Add all ingredients in a mixing glass with ice and shake vigorously. Double strain over fresh ice. Garnish with lingonberries.
Mix 2 cups of fresh lingonberries and 1 cup simple syrup in blender on high speed until fully broken down. Pour contents into a fine mesh strainer and push through. This technique should yield a nice semi thick juice. Add 1 to 2 tablespoons of balsamic vinegar and whisk.