2 1/2 oz of Tequila
1 oz of Lemon Juice
1 tsp of superfine sugar (or sugar)
4 oz of club soda (or clear soda)
Pour tequila, lemon juice and sugar into a cocktail shaker half-filled with ice cubes. Shake well, and strain into a collins glass almost filled with ice cubes. Add club soda, stir well, and serve.