Ingredients

• 1 lb onion, skinned and roughly chopped
• 1 lb tomatoes, roughly diced
• 3/4 lb demerara sugar or 3/4 lb brown sugar
• 2 teaspoons ground allspice
• 2 teaspoons nigella seeds, black onion seeds
• 1 teaspoon mustard seeds
• 3/4 pint malt vinegar
• 3 green peppers, cored, seeded and diced
• 1 teaspoon ground green peppercorn
• 3 red peppers, cored, seeded and diced
• 1 lb cooking apple, cored, peeled and chopped