Tomato paste that is stored in a jar, because the body of the jar does not react with the paste, usually its color and taste do not change. On the other hand, due to the fact that their lids are fully closed, they do not mix with oxygen and their spoilage rate is reduced. The shelf life of glass pastes is longer than the pastes in the can. As long as you have not opened the lid of the glass paste and the paste in the can, you can keep them in the cabinet or somewhere that is not in the vicinity of sunlight. Of course, the temperature of the environment where you keep the paste should be cool. But as soon as you open the paste, you should transfer it to the refrigerator. If you want to use the tomato paste for a short period of time, that is, for a week to a maximum of 10 days, you can keep the tomato paste in the refrigerator. It doesn’t matter if your paste is in a can or a glass bottle. The best place in the refrigerator to store the paste is on the first floor, which is the cold part of the refrigerator.