PROVIDED IS A METHOD OF PRODUCING A PROTEIN- CONTAINING COMPOSITION THAT CONTAINS A PROTEIN OBTAINED FROM CACAO BEANS AT A HIGH CONTENT, IS SUBSTANTIALLY FREE OF A FATTY INGREDIENT, CAFFEINE, THEOBROMINE, AND POLYPHENOLS, AND HAS NO BITTER TASTE AND ASTRINGENT TASTE (I.E. SUSTAINED HARSHNESS). THE METHOD OF PRODUCING A PROTEIN-CONTAINING COMPOSITION INCLUDES: (A) AN EXTRACTION STEP OF EXTRACTING A PROTEIN FROM A RAW MATERIAL CONTAINING A PROTEIN FROM CACAO BEANS UNDER AN ALKALINE CONDITION TO OBTAIN AN EXTRACT CONTAINING THE PROTEIN; AND (B) A PRECIPITATION STEP OF PRECIPITATING THE PROTEIN FROM THE EXTRACT OBTAINED IN THE STEP (A) UNDER AN ACIDIC CONDITION TO OBTAIN THE PROTEIN-CONTAINING COMPOSITION THAT CONTAINS THE PROTEIN FROM CACAO BEANS AT A WEIGHT RATIO OF 42 TO 70% BASED ON THE TOTAL SOLIDS. THE PRODUCTION METHOD MAY INCLUDE (C) A DEFATTING STEP OF REMOVING A FATTY INGREDIENT OF CACAO BEANS BEFORE THE STEP (A) AND/OR AFTER THE STEP (B).