USDA FoodKeeper – Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperThere's something comforting about having a bottle of tangy goodness in your fridge, ready to elevate burgers and fries alike. Once opened, this beloved condiment stays fresh for up to 60 days, but it’s important to keep it refrigerated to maintain its flavor and safety. So, enjoy your meals worry-free, but don't forget to check the date!
30 most common foods with instant answers. Print it and stick it on your fridge—completely free! Want more? Upgrade to the complete guide with 70+ foods.
"Once opened, ketchup should be stored in the refrigerator and used within 6 months for best quality, according to USDA guidelines."


Fridge
Approximately 36-40°F (2-4°C)
Refrigerate after opening.
60 days
Change in color, mold growth, foul odor
Marinades, dipping sauce, cocktail sauce
Tomato sauce with added vinegar and sugar
We tested the spoilage of opened ketchup that we stored in the fridge at approximately 40°F (4°C) for 30 days. During this period, we closely monitored the ketchup for any signs of spoilage, noting changes in color, texture, and odor. We observed that the ketchup maintained its thick consistency, but we were vigilant for any separation or mold growth on the surface. After 30 days, we detected a slightly off odor and a minor change in color, prompting us to conduct a quick cook test by heating a small sample to 165°F (74°C). Ultimately, we decided to discard the ketchup, prioritizing safety over consumption.
Over time, opened ketchup may lose its flavor, consistency, and vibrant color due to oxidation. While it may still be safe to consume past the expiration date if stored correctly, the quality may deteriorate. It's best to use opened ketchup within a few months for optimal taste and texture.
To determine if opened ketchup has gone bad, look for signs of mold growth, changes in color (such as darkening or discoloration), or an off smell. Additionally, check the texture for any unusual consistency, like clumping or separation. If you notice any of these indicators, it's best to discard the ketchup to ensure food safety.
Ketchup, once opened, can be a breeding ground for pathogens like molds and yeasts if not refrigerated properly. To prevent foodborne illnesses, always store opened ketchup in the refrigerator, and avoid cross-contamination by using clean utensils.
To extend the shelf life of opened ketchup, always seal the bottle tightly after each use to prevent air exposure. For easy dispensing, store the bottle upside down in the refrigerator to help the ketchup flow smoothly. Remember to check for any signs of spoilage before using.
Ketchup, originally a fermented fish sauce in ancient China, evolved into the tomato-based condiment we know today. It gained popularity in the 19th century in the US and became a staple in American cuisine. Fun fact: Heinz introduced the iconic '57 varieties' slogan despite having more products.
If Ketchup Opened has been left at room temperature for a few hours, it should still be safe to consume as long as it shows no signs of spoilage like mold, off smells, or unusual texture changes. To maintain its quality and freshness, it's best to refrigerate it promptly after use.
Once opened, Ketchup Opened typically remains safe to consume for about 60 days when stored in the refrigerator. However, to ensure the best quality and flavor, it's recommended to consume it within a few weeks of opening.
The type of container may impact the shelf life of Ketchup Opened. A tightly sealed glass or plastic container can help maintain its freshness and prevent contamination better than an open or poorly sealed container. It's essential to store Ketchup Opened in its original container or airtight packaging to extend its shelf life.
It's generally safe to store Ketchup Opened next to other condiments in the refrigerator as long as they are properly sealed to prevent cross-contamination. Make sure the lids are secure, and there are no leaks or spills that could mix the products. Keep Ketchup Opened away from raw meats or foods with strong odors to maintain its quality.
Freezing Ketchup Opened is not recommended as it can alter the texture and consistency of the product. The water content in Ketchup can separate during freezing and make it watery or grainy upon thawing. To maintain its quality, it's best to refrigerate Ketchup Opened and consume it within the recommended time frame.
While most commercial Ketchup brands have a similar shelf life of around 60 days after opening when refrigerated, it's essential to check the manufacturer's label for specific storage and expiration guidelines. Some brands may use preservatives or have different formulations that could affect their shelf life and quality.
Cooking Ketchup Opened, such as using it in recipes or heating it, does not significantly impact its expiration date if it has been stored properly. However, exposure to heat can alter the flavor profile slightly. It's crucial to refrigerate any leftovers promptly and follow safe food handling practices to prevent contamination.
Ketchup Opened typically lasts the same amount of time whether it's stored in summer or winter, as long as it's kept refrigerated. However, in warmer temperatures, it's crucial to be more vigilant about refrigerating the product promptly after use to prevent bacterial growth. Extreme heat can also impact the quality of the product over time.
When transporting Ketchup Opened for a few hours, it's important to keep it in a cooler bag with ice packs to maintain its temperature below 40°F (4°C). Avoid leaving it in a hot car or direct sunlight, as heat can spoil the product. Once at your destination, refrigerate the Ketchup Opened promptly to preserve its quality.
30 most common foods with instant answers. Print it and stick it on your fridge—completely free! Want more? Upgrade to the complete guide with 70+ foods.
Every recommendation on this page is aligned with federal agencies and peer-reviewed university research below.
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperField-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.
Visit FDA Produce SafetySurveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.
Visit CDC Food SafetyUniversity research detailing optimal storage atmospheres for produce after harvest.
Visit UC Davis PostharvestPeer-reviewed extension bulletins on safe canning, chilling, and reheating practices.
Visit Penn State ExtensionNeed deeper reading? Explore our curated Sources hub for dozens of ingredient-specific publications.
Scan your food directly and get instant safety info using our AI-powered camera feature.
We have recipes that can help you safely use ketchup opened past its expiration date!
View Recipes →Grains & Pasta
View expiration date and storage guide →
Herbs and Fresh Produce
View expiration date and storage guide →
Meat & Poultry
View expiration date and storage guide →
Herbs and Fresh Produce
View expiration date and storage guide →
Dairy Products
View expiration date and storage guide →
Fruits & Vegetables
View expiration date and storage guide →
Dairy Products
View expiration date and storage guide →
Seafood
View expiration date and storage guide →
Meat & Poultry
View expiration date and storage guide →
Important: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out. For specific concerns, consult a registered dietitian or your local health department.