Tomato paste is a thick paste made from ripened tomatoes with skin and seeds removed. It can be used to make either ketchup or reconstituted tomato juice. It's most common culinary usage is as a pizza sauce base, but it is also used in small quantities to enrich the flavor of sauces, particularly tomato sauce. It is also used to flavor vegetable,chicken or meat dishes.
Tomato paste is low in calories, and an extremely source of lycopene, a natural pigment that gives many red fruits and vegetables their color