Yes, it is safe. As long as it is refrigerated.
no
No
Mayonnaise Spoilage Myths - Mayonnaise Safety http://homecooking.about.com/od/howtocookwithcondiments/a/mayospoilage.htm
They don't make cheese with mayonnaise
Mayonnaise is safe to eat if cooked or baked on foods. Mayonnaise can be used a a cake to give it a rich flavor.
Yes, Muslims can eat mayonnaise as long as it does not contain any ingredients that are considered haram (forbidden) in Islam. Most commercial mayonnaise is made from eggs, oil, and vinegar, which are generally halal. However, it's important for Muslims to check the label for any non-halal additives or ingredients, such as certain types of vinegar or flavorings. If the mayonnaise is certified halal, it is safe to consume.
Mayonnaise is a perishable food, and it should not sit out for hours.Yes, mayonnaise can sit out for hours depending on the temperature of the room where the mayo is sitting. For example, in cold areas, mayonnaise is safe for several hours on the counter but in extreme heat, it goes bad quickly.
You can safely refrigerate mayonnaise for up to two months after opening.
No. Use glass jars that have airtight seals and can be sterilized. Plastic won't ensure your home-made mayonnaise will remain safe.
It can, but not for long.
It is safe, most mayo these days in full of preservatives and things that will prevent it from becoming harmful. It can still spoil, of course. and then there is the fact that its nasty in the microwave.