of the show's departed cast and crew reached a distinctive destination in a designated voyage, and it was time to move on. William Asher, 1996
Quick Answer. If unopened and left in a pantry, Miracle Whip can last for a week past its use-by date; if opened, it can last for a month past its use-by date if refrigerated before it goes bad. A person should also check other dates on a jar of mayonnaise, such as the sell-by or best before dates. Keep Learning.
Report Abuse. 1  Once you open the Cool Whip or use some of it or all of it, it should last up to 2 weeks in the refrigerator. 2  It usually only last about a week or two. 3  There should be an expiration date on the container.  As I understand it they say about 2 1  weeks. Mine doesn't even last a few days..  bout 4 months i think.