Palomezcal

If you're choosing to salt the rim of your glass like a classic margarita, dip the rim in a saucer of lime juice, followed by a saucer of sea salt.

Put all the ingredients except the soda water into a cocktail shaker, fill with ice and give it a good shake.

Strain into a tall collins glass over fresh ice and top with soda water and a slice of grapefruit to garnish.