The invention relates to a method for producing a mixture containing a hydrated egg product and a substance of interest, wherein the mixing is carried out by means of ultrasonic nebulization. The method comprises: beating at least one egg product until it is in a foam state; adding at least one substance of interest, in the form of a pressurized mist, to the foamy egg product; mixing until an emulsified mixture in a foam state is obtained; suctioning the emulsified mixture in order to transfer same to a dehydrator; dehydrating the emulsified mixture until a moisture level no greater than 5% is obtained; grinding the emulsified mixture to the desired grain size distribution; and sterilizing the ground mixture. The invention also relates to the mixtures produced using said method, and to the products containing said mixture.