Ingredients
Method
1.To prepare tomatoes, wash and pat dry. Remove the stalk scars and chop into rough chunks. Place tomatoes in a large saucepan and add the salt (1 teaspoon per kilo of tomatoes).
2.Bring to a simmer and continue simmering for around 25 minutes, until very tender, then whiz with a processor, stick whizz or blender.
3.Pour into a sieve and use the back of a spoon to work the mixture through the mesh, removing the skin and seeds.
4.In a large stock pot, heat the oil. Cook the onions, garlic and celery till soft then add the rest of the vegetables. When they begin to soften, stir in the sieved tomato, tomato paste, oregano, sugar and some seasoning. Bring to a simmer and cook until the vegetables are tender. Stir in the parsley.
5.Cool the mixture and divide into resealable plastic bags – I find some single-serve portions useful as well as bigger, family-sized batches. Place the filled bags flat on a tray to freeze, then stack them in the freezer.