Homemade tomato ketchup - delicious. magazine

Ingredients

• 2 onions, chopped
• 2 celery sticks, chopped
• 2kg tomatoes, roughly chopped
• 2 garlic cloves, chopped
• 150ml red wine vinegar
• 3 cloves
• ½ tsp black peppercorns
• ½ tsp coriander seeds
• ½ tsp chilli flakes
• 1 tsp celery salt
• 50g light brown sugar
• Specialist kit
• 2 x 500ml sterilised jars/bottles