Prepare a cocktail glass by rubbing the edge with a sliced calamansi lime and then dip it in li hing salt (recipe in notes) or margarita salt to coat the edge of the glass. Add fresh ice and set aside.
Add all of the liquids to a cocktail shaker with ice. Shake until nice and cold, about 10-12 seconds.
Carefully strain and pour the cocktail into the prepared glass. Enjoy immediately. Cheers!
Notes
To make li hing salt: Place 1 tablespoon margarita salt and 1 teaspoon li hing powder in a small bowl and stir to combine.