oomancy

Oomancy employs eggs for the purpose of divination. The most common method uses separated egg whites which are dropped into hot water. Divination is performed based on the shapes assumed by the rapidly-cooked egg whites. Traditionally, oomancy is performed on Ostara.
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Oomancy [from Greek oon egg + manteia divination] The ancient art of divination by eggs was taught to mankind by Orpheus (SD 1:362); and the diviner was able by inspecting the contents of the egg to perceive whatever the bird born from it would have seen, had it ever been born. The possibility of divination is a logical deduction from the principle of universal correspondences and the interrelation and interpenetration of all parts of the universe. It is therefore only a question of esoteric knowledge and skill. The germ of the future lies concealed in the present, making prediction possible by one whose spiritual faculties have been awakened.

Divination or magic using eggs