Homemade tomato relish

15ml/1 tbsp oil
1 onion,finely chopped
1 garlic clove,crushed
25g/2tbsp flour
30ml/2tbsp tomato ketchup
300ml/1/2pint passata
5ml/1tsp sugar
15ml/1tbsp fresh parsley,chopped

Heat oil in pan and add the onion and garlic and fry for 5 min.Add flour and cook for 1 min.Stir in tomato ketchup,passata sugar and parsley.Bring to boil and cook for 10 min.Cover and chill and use when required.