PROBLEM TO BE SOLVED: To solve such a problem that, if a puff shell of a cream puff absorbs moisture contained in cream, the puff shell deteriorates and texture is deteriorated, so that an open date of the cream puff is not long.SOLUTION: The present invention is configured to: insert a balloon-state content storage bag formed of an elastic thin film, into inside of a puff shell inject the content from an opening part of the content storage bag and then, seal the opening part. Then, immediately before a user eats the cream puff, the content storage bag is broken and the cream is brought into contact with inside of the puff shell, moisture of the cream is not absorbed to the puff shell, and texture is not deteriorated.SELECTED DRAWING: Figure 3