Spiced Ruby and Emerald Indian Pepper Relish - Chutney

Ingredients

• 3 green peppers, diced, cored, seeded and
• 3 red peppers, diced, cored, seeded and
• 1 lb onion, roughly chopped, skinned and
• 1 lb tomatoes, roughly diced,
• 1 lb cooking apple, chopped, cored, peeled and
• 34 lb demerara sugar, or 34 lb brown sugar
• 2 teaspoons allspice, ground
• 2 teaspoons nigella seeds, black onion seeds
• 1 teaspoon green peppercorn, ground
• 1 teaspoon mustard seeds
• 34 pint malt vinegar