Powdered eggs are eggs that have been dehydrated and made into a simple powder, with a texture similar to that of powdered milk. While some brands of powdered eggs utilize the whole egg, others will only include the yolks or the whites, and may add other ingredients to enhance the flavor or the texture of the reconstituted eggs. Generally, it is possible to purchase powdered eggs in bulk, making them ideal for use in preparing a number of mass-produced frozen foods as well as use in restaurants.

The production of powdered eggs is usually traced back to the first half of the 20th century. The eggs were extensively used during World War II, especially in countries where food supplies were airlifted in to feed civilians displaced by occupations and bombings. In the United States, powdered eggs were often used as a substitute for fresh eggs during periods of rationing, allowing fresh eggs to be routed to provide nutrition to people serving in the military. Even with first call on fresh eggs, many branches of the military also utilized the powdered versions as a matter of expediency.

These dehydrated eggs have several advantages over fresh eggs. First, powdered eggs have a longer shelf life. With proper storage, dried eggs can easily last for the better part of a decade. It is not necessary to store the eggs in a refrigerated area; all that is required is a cool to moderate temperature and a dark cabinet or cupboard.

Eggs that have been dried require much less storage space. This means substantial supplies of eggs can be kept on hand in a relatively small space. Re-hydrating the eggs for use in omelets and to make scrambled eggs require nothing other than the addition of a liquid, usually water or milk. In powdered form, the eggs can be added to baked recipes without the need to mix them with a liquid ahead of time.

Another benefit offered by powdered eggs is the price. A pound of dehydrated egg products is significantly cheaper than purchasing an equivalent number of fresh eggs. This makes the dehydrated eggs very cost effective for food producers as well as restaurants.

Today, powdered or dry types of eggs are packaged in several different ways. Whole eggs may be dehydrated and later used in many recipes where whole eggs are needed. It is also possible to purchase powdered egg yolks as well as whole eggs. For use in recipes where the whites are all that is used, such as in meringues, packages of powdered egg whites are available, although there is some difference of opinion as to how well powdered egg whites work and taste when utilized in some recipes.

While many people are not aware, scrambled eggs served in many restaurants are made with the use of powdered eggs. This is particularly true in family style restaurants that offer a breakfast bar. Other restaurants will make use of powdered egg products when preparing fresh baked goods or creating an entrée that calls for the inclusion of eggs in the recipe.