Add tomato paste, tomatoes, wine, stock, bay leaves, worcestershire sauce and apple cider vinegar. Bring to a boil, reduce heat and simmer with the cover off for a minimum of two hours. Four hours may be necessary. Continue simmering until the desired consistency and taste is achieved. The flavors will condense as the liquid condenses. Taste as you go and adjust the flavors, adding more of anything you want. Add more clam broth or stock, if necessary.
Serve with bread of your choice, optional.
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