Provided is a high protein food that comprises, as an active ingredient, immunoglobulin G contained in raw milk milked from a cow, said cow having been administered with a vaccine comprising multiple kinds of attenuated pathogenic bacteria. Also provided is a method for manufacturing the high protein food. The high protein food comprises a powdery composition containing active immunoglobulin G and a fat or oil coating the surface of the powdery composition. The method for manufacturing the high protein food comprises a coagulation granulation step for feeding a powdery composition containing active immunoglobulin G to a fluidized bed granulator, at the same time, flowing air that is controlled to a temperature lower than 60°C into the fluidized bed granulator, and spraying a fat or oil to the powdery composition while fluidizing the powdery composition by the air to thereby carry out coagulation granulation.

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