Place beef steak in freezer for 30 minutes. Then slice thinly.
Place rice in pot and cover with lots of water. Soak for 30 minutes then rinse. This makes it fluffy. Cook according to package directions.
Meanwhile heat oven to 425 F. Lay broccolini out on a baking tray. Splash with a little soy sauce, sesame oil (1-2 tsp. Each) salt and pepper. Toss. Then place in oven 15 minutes or slightly crispy.
Mix the sauce ingredients and set aside.
Once you slice the beef, heat pan with a little oil. Cook on high heat for just a minute or two. Once it’s cooked add the sauce in and just heat till bubbly like 30 seconds to 1 minute. Serve immediately over rice with broccolini.