Tomato paste typically lasts 5 to 7 days in the fridge after being opened, provided it is stored correctly. If stored in its original can, the acidity in the paste can react with the metal and alter its taste or spoil faster. For better preservation, transferring the paste to an airtight container or glass jar immediately after opening is highly recommended. Always ensure the container is tightly sealed to prevent contamination or drying out.

Shelf Life Of Tomato Paste In The Fridge After Opening

Once opened, the shelf life of tomato paste depends on how it is stored. When kept in an airtight container in the fridge at a consistent temperature of 35°F to 40°F, it remains safe to use for up to a week. If left in its original can, the paste may last only 2 to 3 days due to possible exposure to air and the metal's interaction with the paste. To further extend its usability within the fridge, covering the surface with a thin layer of olive oil can create a protective barrier and prevent air exposure.

Signs That Tomato Paste Has Gone Bad

• Mold Growth: Visible green, blue, or white mold on the surface.
• Color Changes: A darker or brownish tint indicates spoilage.
• Off Smell: A sour, rancid, or "off" odor suggests bacterial growth.
• Texture Issues: Slimy or overly dry texture signals spoilage.
• Taste Difference: A sour or bitter taste indicates it’s no longer safe

Tips To Extend The Life Of Tomato Paste

• Transfer to Airtight Containers: Store in airtight glass or plastic containers instead of the original can.
• Oil Barrier: Add a thin layer of olive oil on top to prevent air exposure.
• Portioning: Divide into smaller portions to use only what’s needed and avoid repeated exposure.
• Clean Utensils: Always use a clean, dry spoon to scoop the paste.
• Label the Date: Write the opening date on the container to track storage time.

Can You Freeze Tomato Paste For Longer Shelf Life?

Yes, freezing tomato paste is an excellent way to extend its shelf life. To do this effectively, divide the paste into small portions, such as tablespoon-sized dollops, and freeze them individually on a baking sheet. Once frozen, transfer the portions into a freezer-safe airtight container or bag. Properly frozen tomato paste can last up to 3 months without losing its quality. Thaw only the amount needed by transferring a portion to the fridge a few hours before use.