1. If the beef has a small filling and is easy to cook, it usually takes about 15 minutes to steam after it has been vaporized.
2, if the filling of the beef is relatively large, slow to cook, after the steam usually need to steam for about 20 minutes.
Additionally, it should be noted that if you steam the beef for too long, it may lead to the loss of nutrients in the beef, and may also affect the taste of the beef.