Combine all the ingredients for the pickling liquid in a stainless steel saucepan (don’t use an aluminium pan) and bring to the boil. Stir for a couple of minutes, then remove from the heat and leave to cool.
For the pickles, cut the carrots, radish and cucumber into thin strips about 5 cm/2 inches long. Cut the celery into 1 cm/½ inch diagonal slices. Cut the