Expiration & Storage Tips
When does tomato paste expire?
Unopened tomato paste can last for up to a year past its printed date if stored correctly. Once opened, tomato paste should be used within 3-7 days if kept in the fridge, but it can last up to 3 months if frozen in an airtight container or freezer bag. If you have a reusable tube of tomato paste, it should be used within a month after opening.
How do you tell if tomato paste is bad?
If your tomato paste has gone bad, it will display a darkened color or changes to a rust-like appearance. It may also develop a funky smell rather than its usual vibrant, tomato-ey aroma. One thing to watch out for is the presence of mold, which can grow if tomato paste is improperly stored after opening or if it is old. Any sign of mold, or if the tomato paste has a sour, off-putting smell, it is best to discard it.
Tips for storing tomato paste to extend shelf life
• Always store unopened cans of tomato paste in a cool, dark place like a pantry. Avoid storing near heat sources such as the stove or oven.
• Transfer leftover tomato paste from the can to a glass or plastic airtight container before refrigerating. The original metal can may impart a tinny flavor.
• To extend the life of your opened tomato paste, you can freeze it. Portion it out into tablespoon-sized dollops on a baking sheet, freeze until solid, then transfer to a resealable bag. These frozen cubes of tomato paste can be used directly in most recipes.
• If you have a reusable tube of tomato paste, seal it tightly after each use and refrigerate it. This will help to keep it fresh longer.