Top with club soda or sparkling water (about 2-3 oz).
Stir gently with a bar spoon to combine.
Garnish with fresh blueberries and a lime wheel.
Notes
Store fresh blueberries in the refrigerator and use them within 5-7 days for the best flavor.Make simple syrup by combining equal parts sugar and water in a pot.Heat until the sugar dissolves, then let it cool before using.Silver (blanco) tequila works best because aged varieties can overpower the blueberry taste.For a stronger berry flavor, let the muddled blueberries sit in the simple syrup for 5 minutes before adding other ingredients.