In a small bowl, whisk together the sauce ingredients until combined.
Heat the oil in a wok over a high heat. Add the garlic and ginger and stir fry for one minute.
Add the mushrooms and continue to stir fry for 3-4 minutes until the mushrooms begin to colour.
Add the noodles and sauce. Stir fry for 2-3 more minutes, until the sauce has coated everything and the noodles are mixed in with the rest of the ingredients.