Prepare the Glass: If you like a salted or sugared rim, rub a lime wedge around the edge of your glass and dip it into coarse salt or sugar. Set aside.

Juice the Blood Oranges: Cut the blood oranges in half and juice them until you have about 2 ounces of fresh juice. You can use a citrus juicer for this if you have one.

Mix the Cocktail: In a cocktail shaker, combine the blood orange juice, tequila, orange liqueur, and lime juice. If you want a bit more flavor, you can muddle a few slices of blood orange in the shaker before adding the liquids.

Shake It Up: Add ice to the shaker and shake vigorously for about 15 seconds until well chilled.

Strain and Serve: Strain the mixture into the prepared glass filled with ice.

Add Bubbles: Top off the cocktail with the sparkling water, gently stirring to combine.

Garnish: Add a slice of blood orange and a lime wedge for garnish. Enjoy your refreshing drink!