3/4 oz of Tequila
1/2 oz of soda water
1 tsp of grenadine syrup
1/2 oz of Kahlua coffee liqueur (or coffee liqueur)
1/2 oz of chilled pineapple juice (or Pineapple Juice)
Pour the tequila into a cocktail glass. Add the pineapple juice, top with soda and float the grenadine on top. Serve unstirred, with a straw.