How long is mayonnaise good for unopened?

The shelf life of unopened mayonnaise varies depending on the type of mayonnaise and the storage conditions. Here are the general guidelines for unopened mayonnaise:

Homemade mayonnaise

Homemade mayonnaise is typically made with fresh ingredients and no preservatives. It should be refrigerated and consumed within 2 to 3 days.

Commercial mayonnaise

Commercial mayonnaise usually contains preservatives that help extend its shelf life. Unopened commercial mayonnaise can typically last for up to 2 months when stored in a cool, dark place, such as a pantry or cupboard.

Refrigerated mayonnaise

Once opened, mayonnaise should be refrigerated at all times. Most commercial mayonnaise products have a "best before" date or "use by" date printed on the label. It's recommended to consume mayonnaise within the indicated time frame for best quality and flavor.

Here are some tips to help extend the shelf life of unopened mayonnaise:

* Store mayonnaise in a cool, dark place, away from direct sunlight and heat sources.

* Keep mayonnaise refrigerated after opening.

* Avoid cross-contamination by using clean utensils when handling mayonnaise.

* Discard any mayonnaise that has an unusual odor, color, or texture.