Peel and trim the shallots. You can do this with a small, sharp knife, or, if they’re hard to peel, briefly boil the shallots, then immediately plunge into cold water before peeling.

Tip the salt, vinegar, sugar, peppercorns, bay leaves and 250ml water into a pan over a low heat and cook until the sugar has dissolved and the mixture is steaming. Add the shallots and continue to simmer for 3-4 mins, but don’t let it boil.

Remove the shallots using a slotted spoon and divide between three sterilised jars (see tip, below), leaving a 1cm gap at the top of each. Tip the vinegar mixture into a jug, and pour over the shallots so they’re fully covered. Seal the jars and gently tap or shake to make sure any air goes to the top. Store in a cool, dark place for three weeks before opening. Once opened, store in the fridge.