It always seems like I don't ever have enough tomatoes (no matter how many I plant) in my garden to make everything that I want to make, so a lot of times I will buy the # 10 sized cans of tomato sauce to use. I will recan the tomato sauce in to smaller jars and I will make spaghetti sauce with some of it. it's pretty easy and really good. I use it for spaghetti, pizza, and anywhere a need a red pasta sauce.
Canned Spaghetti Sauce
3 # 10 cans of Tomato sauce
5 Onions chopped, I use a quart of frozen or canned onions.
1/4 cup soy sauce
3 Tbl Worcestershire sauce
1 cup brown sugar
1/4 cup chopped garlic ( I use the chopped garlic in a jar from the store)
4 Tbl dried oregano
4 Tbl dried basil
3 bay leaves ( be sure to take these out before you can)
1 cup vinegar
2 tsp thyme
2 tsp rosemary
1 tsp celery salt
1/4 cup salt
Let simmer several hours. It will reduce down a little. Remove the bay leaves and fill sterilized quart jars add hot lids and process in a water bath for 40 minutes ( be sure to adjust for altitude)
Start with 3 # 10 cans of tomato sauce. Pour into a large pan.
Add all your spices and let simmer for several hours.
Put in Jars and process.