Directions

1. Put the cocktail-mix ingredients into a large jar or pitcher. Add a pinch of salt and stir (the amount of salt depends on how salty the passata is and your preference).

2. Transfer the jar or pitcher to the fridge and chill, letting the flavors meld until ready to use, at least 1 hour.

3. Put the Magic Salt into a saucer or shallow bowl. Swipe the lemon wedge around the rims of 4 tall glasses or pint jars, then dip the rims into the Magic Salt. Put a few ice cubes into the glasses and set them aside.

4. Add 2 cups cold water to the cocktail mix and stir to combine. Fill each glass halfway with cocktail mix, then top up with lager.

5. Add a celery or lovage stalk in each glass and use it to give the drink a gentle stir. Serve immediately.