Use fresh tomato sauce if you can. If not use 2 large cans of San Marzano tomatoes

2 cans San Marzano tomatoes
1 Tbsp sugar
1 tsp salt
3-4 bay leaves
1-2 cloves minced garlic
Dried oregano, basil, summer savory

Fry up garlic in olive oil in pot.
Put tomatoes in blender and add to pot
Add everything else and let simmer. Longer the better.

Simple but so good.