Directions
1. Heat the butter in a heavy-bottomed pan.
2. Add the bacon, onion and carrot and brown lightly.
3. Mix in the flour and cook to a sandy texture.
4. Remove from the heat, mix in the tomato purée.
5. Return to the heat and gradually add the hot stock.
6. Stir to the boil. Add the bouquet garni, season lightly. Simmer for approximately 45minutes.
7. Remove the bouquet garni and mirepoix then pass firmly through a sieve, and a conical strainer.
8. Return to a clean pan, correct the seasoning and consistency. Bring to the boil.
9. Serve hot with toasted croutons separately