Heat the olive oil in a 4-qt pan over medium heat
1-2 tbsp olive oil
Cook the onions until soft and darkly translucent but do not let them brown (This step can take 20 or so mins - don't rush it)
1 large yellow onion
Add garlic and cook until just fragrant (2-3 mins)
2-3 cloves garlic
Add the tomato paste and cook until it begins to darken (3-4 mins)
1 6 oz can tomato paste
Add the cans of tomatoes and the water
2 28 oz cans whole tomatoes, 6 cups water
Simmer, uncovered, until the sauce is reduced by 1/2
Using a wooden spoon or potato masher, break up the tomatoes some
Add any spices, bay leaf, and (optional) wine
1-2 bay leaves, basil/oregano/Italian seasoning, 1 cup good red wine
Continue to simmer, uncovered, until it reaches your desired sauce thickness