Place salt on a plate. Moisten the rim of the glass with the lime juice or water. Dip the rim of the glass gently into the salt to rim the the glass.
Fill cup a 1/4 of the way full with ice. Add 1 1/2 oz tequila, 1/2 oz simple syrup, 1/4 cup ruby red grapefruit juice, a squeeze of lime and top with club soda. Stir well and serve.
Nutrition based on 1/4 tsp of salt consumed.Alternate Method:After adding ice to the salt-rimmed glass you can also fill a cocktail shaker with the ingredients and shake, then pour over the ice and serve.** Drink Responsibly**