Tomato paste is a product that is popular, this paste is one of the types of Iranian pastes and is used in many foods. Tomato paste is prepared in two ways: home and industrial. In the process of preparing the paste, a little heat causes the lycopene in tomatoes to be better and more easily absorbed by the body. Therefore, tomato paste is a good option according to the above. To make tomato paste, the first and most important issue is to prepare good quality tomatoes, so the tomatoes must be ripe and juicy. Green tomatoes contain the toxic substance solanine. To prepare the paste, local and greenhouse tomatoes are available in the market. Local tomatoes give less paste but prevent the paste from becoming moldy and spoiling later. Greenhouse tomatoes, on the other hand, are more expensive, but produce more paste. Also, a copper pot is the best type of pot used to boil the paste. Remember that every 100 grams of tomato paste has 80 calories.