According to "The Association for Dresses and Sauces," commercially available mayonnaise can be left out of the refrigerator for a long time and still be safe. Apparently, the eggs used in commercial mayo are pasteurized, killing bacteria like Salmonella. Also, they say, commercial mayo is sufficiently acidic to be unfavorable to bacteria that may be introduced after opening the jar. I always assumed that Salmonella was the prime problem, but if you think about it, mayo sits on store shelves unrefrigerated for a long time, and there's no reason Salmonella couldn't grow then. TADS also says the reason refrigeration is recommended by the mayo jar is to preserve fresh taste.
Mayonnaise Spoilage Myths - Mayonnaise Safety http://homecooking.about.com/od/howtocookwithcondiments/a/mayospoilage.htm
No, but keep the lid on it
YES. Right away, it can become very YUCKY!!! (It can also make you sick). If it goes moldy, smells funny, or separates. All mayonnaise is is oil and eggs, and because eggs go bad when not refrigerated, this will probably happen within a few hours. Never keep mayonnaise if it's been unrefrigerated all night, even if it appears fine. However, if you jsut left it out from lunch until dinner, you should be fine.</P>
Unrefridgerated no more than a few hours. Refrigerated up to two days.
Peanut butter has a natural preservative in it. It does not need to be refrigerated. It will keep for months out of the refrigerator. How about "natural" peanut butter? I read that there is a cancer-causing mold in peanut butter, and if left un-refrigerated, can grow?
It depends on how long the cheesecake was left out. It's best to keep any leftover pie refrigerated.
An opened bottle of red wine does not keep real well when it is refrigerated. It spoils (tartrates) very rapidly if it's opened and unrefrigerated - usually within 24 hours.
No you can keep it outside but close it very well.
I wouldn't keep it out for more than 15-20 minutes after opening it myself. If it's never been opened then the shelf life is usually 4-6 weeks after the sell by date on the jar. Refrigerated it lasts longer.
The best way to preserve it is always keep it refrigerated. this will give you the longest life out of your dressing however keep a close eye on it because a mayonnaise based dressing usually does not have a long shelf life.
After 2 hours of being removed from the heat, they should be refrigerated if you want to keep them to eat later.
I would suggest you refrigerate the opened container. If it was in the refrigerated section when you bought it, keep it refrigerated. If it was not in the refrigerated section, check the label for instructions like "refrigerate after opening". Absent those instructions, refrigeration would probably help protect flavor even if food safety might not be an issue.
It depends on whether it needs to be refridgerated before opening the ham or only after opening the ham.
Yes. The main difference between Mayonnaise and Miracle Whip is that Miracle Whip has vinegar and spices which aren't present in mayonnaise. You may need to add some additional spice and acid to make up for the difference. Just remember to keep whatever it is refrigerated.
No - unless the label states "keep refrigerated" which should mean that it was in the refrigerated case when you purchased it.
Packets of mayonnaise are generally designed to be kept at room temperature, unless the label reads "keep refrigerated". The shelf life of the packets is only a couple months. Refrigeration may help extend the shelf life.
Not if you intend to eat it straight away. If you plan to store them, keep them in an air-tight container.
Absolutely! Spirits dont need to be refrigerated although some with cream in them (eg Baileys Irish Cream) will keep longer in the fridge if its not going to be finished in a couple months.
They don't have to be refrigerated, but they will keep longer if they are.
About a day
A reasonable rule of thumb is to not exceed two hours unrefrigerated. At that point, it should be reheated or refrigerated. If the ambient temperature is quite warm, then reduce that to 1 hour.