Bring a large pot of water to a boil for pasta. Once boiling, add some salt and the pasta. Cook to al dente.
Meanwhile, trim chicken and season with salt, pepper and coriander. Heat about 1 tablespoon of oil, a turn of the pan, in a large, deep skillet or wok over high heat. Add chicken and cook 4 minutes on each side. Remove to a cutting board and reserve.
Add another tablespoon of oil to the pan, a turn of the skillet, and stir-fry mushrooms a few minutes to soften and brown. Stir in ginger and garlic, toss a minute or two more then add vinegar. Stir, add Tamari and stock, and bring to a boil.