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Ketchup is a beloved condiment with a tangy-sweet flavor that pairs well with a variety of dishes, from french fries to meatloaf. While the origins of ketchup may be debated, its popularity in American cuisine is undisputed.

### Why You Should Store Ketchup in the Refrigerator
Once opened, it is best to store ketchup in the refrigerator according to culinary specialists. Although tomatoes are naturally acidic and create a somewhat shelf-stable product, refrigerating ketchup ensures a longer-lasting flavor and texture experience. This is due to the slowing down of oxidation and bacterial growth that occurs in room temperature storage.

### How to Keep Ketchup Tasting Great
Refrigeration is essential for keeping opened bottles of ketchup fresh for a longer period of time. This preservation method slows down oxidation, bacterial growth, and maintains the quality of the product. Checking the “best by” or “use by” date on the bottle is recommended to ensure freshness.

### How to Tell If Your Ketchup Is No Longer Good
While storing ketchup in a cool, dark pantry is safe for short periods, other factors can cause spoilage or affect quality. Ultraviolet light and heat can damage the flavor, and mold growth indicates that the ketchup is no longer safe to eat. Cleaning the cap after use, ensuring a tight seal on glass bottles, and squeezing out excess air from plastic bottles can help prevent spoilage.

### The Bottom Line
In conclusion, refrigerating an opened bottle of ketchup is the ideal storage method to maintain its flavor, texture, and quality over time. Checking the expiration date and being mindful of changes in color, smell, or texture can help determine if the ketchup is still safe to consume. If any signs of spoilage are present, it is best to discard the product.