Just remember that they'll add more salt, less sweetness, and no tomato flavor, so use them judiciously. And since one of tomato paste's best qualities is its ability to caramelize into an even more ...
For the best flavour, buy tomato purée in jars rather than cans ... Heat until the tomato pulp has reduced to a thick paste. Use in pasta sauces, casseroles and soups.
Canned tomatoes and tomato paste are very high in lycopene, a protective antioxidant. Apart from the pantry staples, you’ll need fresh basil (or oregano in winter) and parmesan cheese.