The present invention addresses the problem of providing, by a simple method, a method for conferring light deterioration resistance on cocoa butter, which has low light deterioration resistance. By performing degumming treatment using phospholipase, cocoa butter can be conferred light deterioration resistance. When white chocolate was prepared using the thus-obtained cocoa butter, light deterioration was remarkably suppressed. Although any kind of phospholipase may be used, the use of phospholipase A2 is preferred as the effect therewith is particularly remarkable.
