Grind ginger, garlic and red chillies into fine paste with splash of vinegar.
Mince dates and raisins in a food processor without adding water.
Chop tomatoes roughly, put in large pan, and cook till soft and mushy. Add the paste made in step 1 , minced raisins and dates, sugar, vinegar and salt. Cook, stirring frequently, on low heat till sugar melts.
Increase heat to high and continue to cook, until chutney reaches consistency of thick jam. Leave to cool.
Fill in air-tight jars. Will keep for 6 months in the refrigerator.