Wash the tomatoes
Remove stems and any damaged parts
Score a small X on the bottom of each tomato
Boil water in a pot
Blanch the tomatoes for 30 to 60 seconds
Transfer the tomatoes to ice water
Peel off the skins
Chop the tomatoes
Heat olive oil in a pan
Add chopped onion and cook until soft
Add minced garlic and cook briefly
Add the chopped tomatoes
Add salt and black pepper
Add sugar if needed
Add dried basil, oregano, or other herbs
Simmer the sauce until thickened
Stir occasionally
Taste and adjust seasoning
Blend if a smoother sauce is desired
Use immediately or cool and store in a container