In a large glass or cocktail shaker, crush or muddle together the sugar cubes, cucumber, salt, and 1 ounce club soda. Pour in the lime juice, chartreuse, blanco tequila, and jalapeno tequila. Stir or shake the mixture to combine. Pour the mixture into another glass over ice. Add the remaining club soda to top off, and garnish with a mint sprig.
Recipe courtesy of Phil Ward, Mayahuel