2 oz. Greylock gin 1/2 oz. fresh lemon juice 1/2 oz. Royal Rose Strawberry-Fennel Syrup 1 egg white 5 drops Bitter End Chesapeake Bay bitters
Dry shake ingredients until very frothy, about 1 minute. Add ice and shake for at least one more minute. Strain into a chilled cocktail glass and garnish with a lemon twist.