The classic combination of vermouth and Campari is replicated here in mocktail form. Pomegranate juice lends the acidity, astringency, and sweetness of vermouth, and bitters gives a strong herbal note, like Campari.
Fill a rocks glass with ice, and add the pomegranate juice. Top with soda water and stir. Add the bitters to the top of the drink and very gently stir, leaving some bitters at the top of the glass for maximum aroma.