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Refrigerate These Foods After Opening
Basics of Cooking Lesson Series
Related Resources
All Busy Cooks Cooking Lessons
Stock Your Kitchen
Always Chill
Always Freeze
Refrigerator Tips
Do Not Chill
Chilling Not Recommended
Do Not Freeze
Freezing Tips

These foods must be refrigerated after opening to ensure the safety of the product. Make sure to read labels on any canned or jarred food for more information. After opening, these foods cannot be left at room temperature longer than 2 hours or bacteria will begin to grow at an exponential rate. If the ambient temperature is warmer than 80 degrees Fahrenheit, these foods should be back in the refrigerator within 1 hour.

MAYONNAISE Once opened, mayonnaise must be stored, tightly covered, in the refrigerator.
MUSTARD AND KETCHUP Store tightly covered in the refrigerator after opening for best quality and flavor.
CANNED FOODS Once canned foods are opened, they must be refrigerated. Remove the foods from their original can and package in glass or plastic, tightly sealed containers to avoid a tinny taste.
PICKLES AND PRESERVES After you break the seal on these foods, they must be refrigerated.
JAMS AND JELLIES Store in the refrigerator after opening.
ASEPTICALLY PACKAGED FOODS Aseptically packaged foods are packaged in a pouch or box and processed with ultra-high temperatures for a short time to kill bacteria. The package is designed with a sealed foil layer to prevent moisture or air transfer, just like canned foods. When opened, this seal is destroyed and the foods must be refrigerated. These foods include shelf-stable entrees, dairy products, soy milk, juice boxes, and smoked meats.
CONDIMENTS Chutney, pickled products, and other condiments should be refrigerated after opening.
SALAD DRESSINGS Store in the refrigerator after opening.
BABY FOODS All canned and bottled baby foods must be covered tightly and refrigerated immediately after opening.
CANNED PET FOODS Tightly cover canned pet foods (I use foil, then ziplock bags to avoid flavor transfers with other foods in the fridge) and store for 1-2 days after opening.
NUT OILS Nut oils can become rancid very quickly and should be stored, tightly covered, in the refrigerator after opening.
HOT SAUCES, CHILI SAUCE Refrigerate after opening in the original container.
CHOCOLATE SYRUP AND ICE CREAM TOPPINGS Refrigerate in the original container, tightly covered, after opening.

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