- In a hot wok, add oil then add the spring onion, garlic, ginger, mushrooms and peppers and stir fry for 5 minutes. Add the broccoli,sugar and corn and fry for another 5 minutes until the vegetables are cooked but still firm. Add the baby spinach, soy, oyster sauce and sesame oil then stir fry for another 2 minutes to wilt the spinach. Add the cooked noodles then toss to combine, Season with lemon juice and more soy and serve hot.