Shells from which the edible part of the egg has been emptied. With nothing inside to spoil, you can decorate empty eggshells and keep them indefinitely.
To empty an eggshell, first wash the egg, using water warmer than the egg, and dry it. With a sterilized long needle or small, sharp skewer, prick a small hole in the small end of the egg and a large hole in the large end. Carefully chip away bits of shell around the large hole until it’s big enough to accommodate the tip of a baster. Stick the needle or skewer into the yolk to break it.
Either shake the egg large-end down over a cup or bowl until the contents come out or use a baster to push out the contents. Press the bulb of the baster to push air into the egg, letting the contents fall into the cup. If the contents don’t come out easily, insert the needle again and move it around to be sure both the shell membranes and yolk are broken. Rinse the empty shell under cool running water and stand it on end to drain and dry. Be careful when decorating emptied shells – they’re quite fragile.
Use the contents of emptied eggshells immediately in a recipe which includes mixed yolks and whites and calls for thorough cooking. Most baked dishes – such as casseroles, custards, quiches, cakes or breads – are good uses for eggs emptied from their shells.