Heat a large pot add the oil, onion, bacon, carrot and garlic and cook without colouring
Add the spices, celery salt and oregano. Cook till fragrant.
Add the black beans liquid and all. Add the tomato passata and chicken stock
Simmer for 15 minutes or till reduced by 1/4. If you want to garnish your soup with bacon or pancetta prepare it now and set aside
Puree the soup till smooth. This is best done with a stick blender however you can put it into a blender or food processor
Serve the soup with a slice of avocado, extra bacon and chopped tomato or just a swirl of sour cream