Sous-vide the steak with 70ml teriyaki sauce at 60C for 1 hour. Put aside until ready to cook.
Get a wok and a frying pan over a very high heat. Put a splash of oil in the wok and add the garlic and sugar. After just a few seconds add the onion, carrot and asparagus and stir fry for 3 - 4 minutes until starting to go tender. Add the rice and continue to stir fry until warmed through.
In the other frying pan sear the steak for 60 seconds on each side, adding half the remaining teriyaki sauce to the pan at the end to glaze. Remove to a board then slice into thick fingers.
Add the egg and last of the teriyaki to the rice and stir for another 60 seconds. Spoon into bowls and serve with the steak slices on top. Sprinkle a little sea salt on the exposed flesh of the beef.