Tomato sauce is one of the most popular and universal sauces in the world. It is used for making pizza, pastas, lasagna and many other Italian cuisine dishes. If we consider ketchup as a kind of tomato sauce, it will turn out that we may use it with everything - from roasted meat to a simple cheese sandwich. Apart from numerous ways of using it and a pleasant flavor, tomato sauce is also very healthy. As it is well-known, tomatoes contain lycopene – the substance that fights down free radicals and prevents cancer. However, lycopene is released mostly during the thermal treatment and for that reason tomato preserves are much healthier than raw fruits.