When embarking on a long cruise, it is nice to be able to have fresh food as much as possible. The difficulty, of course, is that the refrigerator on a boat isn't that big. On a three-week Caribbean cruise, I learned a trick from a friend for keeping eggs fresh outside of the fridge: Coat each one with Vaseline, and then place them back in the carton. Store the carton somewhere safe from falling. The eggs will last weeks. When you need to use the eggs, wipe them down with a paper towel. The Vaseline prevents oxygen from penetrating the eggs and thus retards the spoilage. Since it is petroleum-based, it doesn't get rancid itself.

– Wendy Kravit