Tat Tomato Paste is offered for sale in tin packaging. Tomato pastes and tomato purees should be stored in a cold environment. It should not be in contact with air as much as possible. Mold can be seen in tomato paste due to its moisture content. To prevent mold: Tomato paste should be stored in a cold environment. It should not be in contact with air as much as possible. After the box is opened, adding 2 cm of vegetable oil to the tomato paste and storing it in the refrigerator prevents the formation of mold.