An unopened packet of ketchup is OK to use for one to two years after the expiration date printed on the packet. Expiration information is labeled as a "best by" or "use by" date.Know More
Tomato ketchup is a popular condiment for foods such as hamburgers, french fries and hot dogs. Small ketchup packets are available at restaurants and fast food establishments. Generally, ketchup packets remain good for up to a year after the printed expiration date.
The vinegar and tomatoes in ketchup make it acidic, which allows it to stay fresh longer. Ketchup that is no longer safe to eat turns to a dark maroon color with a thick consistency.Learn more about Food Spoilage
It takes potatoes approximately two to five weeks to expire according to Eat by Day. The exact amount of time it takes for potatoes to expire depends on a number of factors, including the type of potato and storage method.Full Answer >
Parmesan cheese does go bad, but it can outlast the printed expiration date, according to EatByDate. Parmesan cheese kept in the refrigerator is usually good two to four months past the expiration date. When kept in the freezer, it is good for six to eight months after the expiration date.Full Answer >
Because ricotta cheese is a milk-based product, it does go bad. Unopened ricotta cheese stored in the refrigerator is good for between five and seven days past the sell-by date.Full Answer >
A refrigerator keeps all foods safe to eat for four hours without electricity. Beyond that time, some, but not all foods remain safe to eat. Foods that should be discarded after four hours are meats, dairy, soft unprocessed cheeses, and prepared meals or leftovers.Full Answer >