The invention relates to an apparatus for boiling an egg said apparatus comprising a device for providing microwave radiation in a confined space said space further comprising a holder provided with at least one cavity adapted to the shape of an egg with an eggshell said cavity provided with a first layer surrounding the eggshell said first layer: is in heat exchanging contact with the shell of the egg has a dielectric constant with an imaginary part e" between 20 500 at a temperature between 0°C 100°C and at a microwave frequency of 2.45 GHz and having a layer thickness d of 1 6 millimetre and varying less than 30 % over the egg or said holder for holding at least one egg assembly adapted for cooking an egg using microwave radiation said egg assembly comprising an egg having an eggshell which is provided with an packaging surrounding the eggshell said packaging comprising a first layer which: enfolds the shell of the egg and is in heat exchanging contact with the eggshell has a dielectric constant with an imaginary part e" between 20 500 at a temperature between 0°C 100°C and at a microwave frequency of 2.45 GHz and has a layer thickness d of 1 6 millimetre and which varies less than 30 % and said packaging designed to retain the layer thickness of the first layer while said egg assembly is subjected to said microwave radiation to turn said egg into a boiled egg.
