Step 1

In a bowl, mix together the vegetables, pears and salt with 2 litres of cold water, then cover and leave overnight.

Step 2

The next day, drain the brine from the vegetables, rinse briefly, then tip into a large saucepan with the vinegar, ginger, coriander seeds, mustard seeds and sugar. Bring to the boil and simmer for 8-10 mins until the veg is just tender but still with a little bite. Drain the vegetables, reserving the liquid, and set aside while you make the sweet mustard sauce.

Step 3

In a large bowl, stir together the cornflour, mustard powder and turmeric, then gradually pour in the hot vinegar while whisking, until you have a lump-free, thin yellow sauce. Return it to the saucepan and bubble over a low heat, stirring constantly, for 4 mins until smooth and thickened. Stir in the veg and spoon into five sterilised 500ml jars while hot, then seal. Once cool, enjoy straight away, or store in a cool, dark cupboard for 2-3 months. Refrigerate once opened.