Prepare the Glass: If you want a salted or sugared rim, rub a lime wedge around the edge of your glass and dip it into a plate of salt or sugar.
Muddle the Blueberries: In a cocktail shaker, add the fresh blueberries. Use a muddler or the back of a spoon to crush them gently, releasing their juices.
Add the Liquids: Pour in the tequila, triple sec, fresh lime juice, and simple syrup into the shaker.
Add Ice: Fill the shaker with ice, covering the liquid.
Shake It Up: Secure the lid on the shaker and shake vigorously for about 15-20 seconds. This helps mix everything thoroughly and chills the cocktail.
Strain: Use a strainer to pour the mixture into your prepared glass. You can choose to serve it over fresh ice or straight up, depending on your preference.
Garnish and Serve: Top off your margarita with a few whole blueberries for a pop of color. Enjoy your refreshing Blueberry Margarita!