Sautee onion and celery for 5 min in pot. Add carrots, potatoes, mushrooms, other veggies, worcestershire sauce, salt, pepper, thyme & garlic to water and bring to boil. REduce heat, cover and simmer 1 hr. Stir in can of tomato with juice, ketchup and bring to boil. Half hr before serving, add fish, clams with juice and other seafood and simmer for 15-30 min till fish is cooked. Makes 8 Qts.