To marinate the meat
Mix all the ingredients together well in a bowl. Add the meat to the marinade, mix well, cover and leave to marinate in the fridge for 1-2 hrs.
Place the rice in a fine-mesh sieve, rinse with cold water until the water runs clear. Bring the rice to the boil with double the amount of water (600 ml). Cover the pan, turn off the hob, leave the rice to absorb on the hob for approx. 10 mins. Mix in the spring onion and soy sauce, cover the rice and leave to fluff up for a further 5 mins.
Sear the meat in batches in hot oil. Return all of the meat to the pan, add the carrots and mushrooms, continue to cook for approx. 3 mins. Season with soy sauce and pepper. Plate up the meat, sprinkle with sesame seeds. Serve with the rice.