All About Ketchup
Your complete guide to ketchup - discover how to store it properly, identify when it's gone bad, and find the best substitutes for your recipes.
How Long Does Ketchup Last?
Storage times and freshness tips for ketchup 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 pantry1-2 years past printed best-by date
Signs of Spoilage
Swollen or bulging container, leaking, unusual discoloration visible through the container, mold growth, or a strong, foul odor upon opening.
How to Check
Visual inspection: Check the container for any signs of swelling, leaks, or damage. Look for any visible mold or significant color changes inside the bottle. If the container is compromised, do not open or consume.
Storage Tips
Store in a cool, dark place away from direct sunlight and heat sources to maintain optimal quality. The 'best-by' date refers to peak quality, not necessarily safety, but significant time past this date may result in flavor degradation.
opened fridge6 months to 1 year
Signs of Spoilage
Visible mold (fuzzy spots, usually black, green, or white) on the surface or around the cap, significant liquid separation that doesn't re-mix with shaking, darkening or unusual discoloration (e.g., brownish), an off-smell (sour, fermented, yeasty, or musty), or an unusually watery or slimy texture.
How to Check
Visual inspection: Open the cap and carefully examine the surface of the ketchup and around the rim for any mold or unusual colors. Squeeze a small amount onto a spoon to check for consistency and any embedded foreign matter. Smell test: Give the ketchup a good sniff. A fresh, tangy, slightly sweet aroma is normal. Any sour, fermented, musty, or 'off' smell indicates spoilage. Taste test (use caution): If visual and smell tests pass, you can taste a very small amount. An overly sour, bitter, or otherwise unpleasant taste means it's no longer good. Discard immediately if any mold or strong off-smell is detected.
Storage Tips
Always keep the cap tightly sealed after each use to prevent air exposure and contamination. Store on an inner shelf of the refrigerator rather than the door, where temperatures can fluctuate more. While ketchup's acidity helps preserve it, refrigeration is crucial after opening to slow down microbial growth and maintain quality and safety.