First, pour the water and granulated swerve into a small saucepan. Place the saucepan over medium heat. Then, stir continuously with a spoon or small whisk as the mixture warms. After a few minutes, you will notice the liquid becoming clearer as the sweetener dissolves. Once the mixture reaches a gentle simmer, continue stirring for another 30 to 60 seconds to ensure the sweetener fully dissolves and no crystals remain on the bottom of the pan. Next, remove the saucepan from the heat immediately to prevent evaporation. Stir in the orange extract while the syrup is still warm so it blends evenly. Finally, set the syrup aside and allow it to cool completely to room temperature. This cooling step is essential because warm syrup will melt the ice too quickly and dilute the margarita.

While the syrup cools, prepare your serving glass. First, pour the coarse sea salt onto a small flat plate and spread it evenly. Then, take a fresh lime wedge and gently rub it around the entire rim of the glass. Make sure the rim becomes slightly moist but not dripping. Next, press the rim of the glass into the salt and rotate gently so the salt sticks evenly. Set the glass aside and allow the rim to dry slightly. This helps the salt stay in place when you pour the drink.

Once the syrup has cooled, fill a cocktail shaker halfway with ice cubes. The ice should be fresh and solid, not melted or wet. Then, measure and pour 3 ounces of the cooled syrup into the shaker. Next, add the freshly squeezed lime juice and the lime zest. After that, pour in the tequila. Secure the lid tightly on the shaker. Shake the mixture vigorously for 20 to 30 seconds. During this time, the ice chills the drink rapidly and slightly dilutes it for balance. You will know it is ready when the outside of the shaker feels very cold and slightly frosted.

Now, fill the prepared glass with fresh ice cubes. Then, open the shaker and strain the margarita mixture into the glass slowly. This prevents ice shards and lime zest from entering the drink unless you prefer a more rustic texture. Finally, garnish with a lime slice or wedge on the rim of the glass. Serve immediately while cold for the best flavor and texture.