Peel, core and chop the pears. Roughly chop the tomatoes. Finely chop the onions and chillies. Peel and grate the ginger.
Put everything in a heavy-based pan and combine. Gently heat it up, bring to the boil, then gently simmer uncovered for 45-60 minutes until you get a thick jam. There shouldn’t be any liquid left around the vegetable/fruit pieces, only a very thick, sticky sauce.
Spoon the hot chutney into cool, sterilised jars. Seal the jars and move them to a cool place for storage.
Once opened, keep the jars chilled in the fridge.