- Heat oil in a non-stick deep pan, add garlic, ginger, celery stalk and sauté for 1 minute. Add spring onion and sauté well. Add yellow squash, green zucchini, carrot, button mushrooms, shiitake mushrooms and sauté for 1-2 minutes. Add capsicums and sauté. Add salt, crushed black peppercorns, soy sauce, red chilli sauce and mix well. Add oyster sauce, mix well. Add vegetable stock, 1½ cups water and mix well. Cover and cook for 2-3 minutes. Add corn flour slurry and mix well. Cook till the mixture thickens. Add bok choy and mix. Add basmati rice and mix well. Cook for 1 minute. Add spring onion greens and take the pan off the heat. Transfer prepared rice into a serving bowl, garnish With spring onions and serve hot.