Consider this cocktail an Italian-style white wine spritzer, which Rach's husband John created to go along with her Beer Can-Style White Wine Chicken and Pasta With Green Beans and Kale-Walnut Pesto Sauce.
Combine the white wine, Campari, simple syrup, orange bitters (if using), and club soda in an ice-filled wine goblet or Collins glass. Stir gently and garnish with the rosemary sprig.
Always drink responsibly.