1 1/2 oz of Tequila
1/4 oz of St Germain (or Elderflower Cordial)
1 oz of grapefruit juice
1/2 oz of Lime Juice
1/2 oz of simple syrup
4 dash of tabasco
3 dash of grapefruit bitters
4 oz of Grapefruit Soda
1 slice of peach
Add all ingredients except soda & bitters to an ice filled cocktail shaker