Season the beef with the salt, sugar, soy sauce and rice cooking wine. Marinate for at least 20 minutes.
Chop the broccoli and set aside.
Add the onions and saute for 1 minute. Add the beef . Stir until the beef changes colour and there is no blood showing in the meat.
Add the broccoli stir for 1 minute. Add the cornstarch mixture and stir until evenly coated. Serve immediately.
Note: If you want to add noodles add it right before you pour the cornstarch mixture. Nutrition facts does not include the optional salt.