2 oz of Tequila
2 oz of grapefruit juice
1 oz of Lime Juice
1/4 oz of simple syrup
2 dash of grapefruit bitters
3 oz of soda water
1 dash of orange liqueur
Shake tequila, (Use half a grapefruit and half a lime) grapefruit juice, lime juice, simple syrup and bitters with ice. Pour into tall glass and top with club soda. Splash with Grand Marnier and top with Citrus Wedge