1½ oz silver tequila1 oz coconut milk¾ oz lime juice½ oz simple syrup (1:1)¼ oz yellow Chartreuse2 oz soda water
instructions :

Add all the ingredients (minus the soda water) to a shaker with ice and quickly shake to chill, but don’t over-dilute the ingredients.
Strain into jarrito of Collins glass filled with fresh cubed ice and add soda water.

source :