PURPOSE: To contrive freshness retention of a raw egg for a long period by dipping the raw egg in a specific dipping solution, then drying the eggshell surface and further standing and holding the raw egg erect with the obtuse end thereof up.

CONSTITUTION: A fresh raw egg is dipped in a dipping solution in which medical stone, such as sunstone, or ceramics emitting far infrared rays at 6-12μ spectrum is dipped for a prescribed time to permeate the above-mentioned dipping solution from the pores of the eggshell of the afore-mentioned raw egg into the interior thereof. After the amount of the permeated dipping solution attains a prescribed value, the egg is taken out of the dipping solution to dry the surface of the eggshell. In this state, the egg is then stood erect with the obtuse end of the above-mentioned egg up to retain the freshness of the raw egg for a long period using a simple apparatus.