Spray a large saucepan with low calorie cooking spray and place over a medium heat.
Add the carrots, onions and celery and sauté for 10 minutes until soft.
Add the garlic and herbs and cook for a further minute.
Add the mushrooms to the pan and stir for 2-3 minutes until they begin to cook down.
Stir in the tomato puree, tomatoes and the red wine stock pot.
Add the stock and Henderson's relish and bring to the boil.
Turn down the heat and simmer for 20-25 minutes until all the vegetables are soft and the sauce is rich and thick.
Serve with your choice of accompaniment.