Shake Maker's Mark Bourbon, chamomile/blueberry syrup, lime juice and egg whites with ice, then double-strain into a tall glass with ice. Top with soda water and then gently push down and stir twice with a bar spoon. Muddle the cucumber in a shaker. Add remaining ingredients and ice. Shake vigorously and double strain into a tall glass with ice. Garnish with cucumber zig-zags and fresh blueberries.
*Chamomile/blueberry syrup: Boil 16 oz. of water with 4 chamomile tea bags for 10 minutes. Remove the tea bags, then add 1 cup of blueberries and simmer for 10 minutes. Remove the blueberries, remove pot from heat, add 3/4 cup of sugar and stir until sugar dissolves, then let the syrup cool.