Dehydrating food has been a practical preservation strategy since ancient times. Today, dehydrated foods pop up everywhere from your favorite snack aisle to your local sporting goods store.

Eggs in the shell that are stored at a consistent temperature of 40°F will last three to five weeks. (Getty Images) But Ashley Walter, holistic nutritionist and founder of Living with Ashley, tells ...

Amid global egg shortages, let’s look back at a wartime staple: powdered eggs. “Eggs are extremely perishable and fragile, and so there is always a lot of interest in trying to extend that shelf life ...