Prepare all of the ingredients by slicing 1 onion, 8 mushrooms, 1 carrot and/or any vegetables you would like to use. Chop green onion and cilantro and put aside.
Marinate one pound of sliced beef,chicken,pork, seafood, tofu (great if you are vegetarian), or any other meat ingredient you choose. To marinate I use 1tsp. sesame oil, 2 tbsp. soy sauce, 2 tbsp. hoisin sauce, 2tbsp. oyster sauce and 2 cloves chopped garlic.
Wash one cup of bean sprouts and leave it in the strainer for now.
On high heat, lightly cook the onions in a few tablespoons of cooking oil. I use vegetable oil or grapeseed oil.
Add the meat to the onions and mix it up until the meat is cooked. If you are using tofu, add the tofu when the bean sprouts are added. If you are not using bean sprouts add them after the vegatables are added.
Add the remaining vegetables and mix them in. Let them cook for a minute.
Mix in the bean sprouts, green onion, and cilantro. Then stir in a package (6-8 cups) of cooked noodles and you have yourself some stir-fried noodles!