MUDDLE grapes in base of shaker. Add other ingredients, SHAKE with ice and fine strain into chilled glass.
It's amazing how well grapes combine with tequila.
Created in 2003 by Shelim Islam at GE Club, London, England. Pronounced 'Hal-is-co', this cocktail takes its name from the Mexican state that is home to the town of Tequila and the spirit of the same name.