Dip the rim of a margarita glass in lime juice then margarita salt. Hold the glass upside down for 15 seconds for the salt to set. Fill the glass with ice.
Mix all ingredients in a cocktail shaker over ice. Strain into the ice-filled glass.
Simple Syrup
Mix water and sugar together in a small saucepan. Bring to a boil and stir until the sugar dissolves. Allow it to cool completely. Place in a squeeze bottle or mason jar and refrigerate. Keeps 7 days.