I see recipes with many ingredients but the tomatoes sauce have only few ingredients.
All you need is a very good quality tomatoes .
In Italy we use San Marzano .
Here in Australia I bought Roma tomatoes and they are really good !
Ingredients for about 4-5 1 liter jars
6 kg tomatoes –
350 g onions
-garlic
basil leaf
Salt
Sugar
Cook the tomatoes for 30 minutes .
Squeeze them in a vegetable mill.
Left apart.
In a cooking pan stir the olive oil , onions in little pieces and garlic if you like also a chopped carrot add salt and a tea spoon of sugar .
Cook for 30 min slowly.
Add basil leaf
Put in sterilized jar! Enjoy!