All About Canned tomatoes
Your complete guide to canned tomatoes - discover how to store it properly, identify when it's gone bad, and find the best substitutes for your recipes.
How Long Does Canned tomatoes Last?
Storage times and freshness tips for canned tomatoes in different conditions.
Safety first: This guide provides general information. When in doubt, throw it out! Trust your senses and err on the side of caution. If something smells, looks, or tastes off, don't consume it.
unopened pantry12-18 months past 'best by' date
Signs of Spoilage
Bulging or leaking can, deep dents (especially on seams), rust, foul odor upon opening, visible mold, or discoloration of contents.
How to Check
Visually inspect the can for any damage (bulges, leaks, rust, severe dents) before opening. Upon opening, listen for a 'whoosh' sound indicating the vacuum seal was intact. Check for any off-odors (sour, metallic, fermented) immediately. Examine the color and texture of the tomatoes; they should look vibrant and consistent.
Storage Tips
Store cans in a cool, dry place away from direct sunlight or extreme temperatures. While safe for longer, quality may degrade after 18 months. Do not consume if the can shows any signs of damage or if the contents smell or look off.
opened fridge5-7 days
Signs of Spoilage
Visible mold growth (often white, green, or black fuzz), fermented or sour smell, significant darkening or change in color, slimy or mushy texture.
How to Check
Visually inspect for any mold on the surface or sides of the container. Perform a smell test; any sour, yeasty, or off-putting odor indicates spoilage. Check the texture; it should not be excessively slimy or watery.
Storage Tips
Transfer any unused canned tomatoes to a clean, airtight, non-reactive container (glass or plastic) immediately after opening. Do not store in the opened can, as the metal can leach into the acidic tomatoes and affect flavor and potentially safety. Use within the recommended timeframe for best quality and safety.
opened freezer6-8 months (for best quality)
Signs of Spoilage
Significant freezer burn (dry, discolored spots), loss of vibrant color, changes in texture upon thawing (excessive mushiness), or development of off-flavors (though less common with tomatoes). While safe indefinitely, quality degrades over time.
How to Check
Visually inspect for freezer burn before thawing. Upon thawing, check for any unusual colors or odors. The texture may be softer than fresh, but it shouldn't be completely disintegrated or slimy.
Storage Tips
Transfer opened canned tomatoes to freezer-safe containers or heavy-duty freezer bags, leaving some headspace for expansion. Label with the date. Thaw in the refrigerator overnight before use. Freezing is an excellent way to prevent waste if you have leftovers.