Fry the onion, carrot, celery, bacon, and garlic in 1 tablespoon of olive oil for 3-4 minutes until softened.
Turn the heat up to high and add the chicken mince. Fry until the chicken mince has changed colour. This will take roughly 3-4 minutes.
Add in the passata, stock, tomato puree, milk, white wine vinegar, bay leaves, oregano, sugar, salt and pepper. Simmer for 25-30 minutes.
Serve with pasta, grated Parmesan and a sprinkling of chopped parsley.