For the mushrooms, Straw, Shiitake, Button, or Oyster, would be great choices. For Straw, slice in half lengthwise; for Shiitake, remove the stems and cut the caps in half; for Button, cut lengthwise into quarters; for Oyster, tear into bite size pieces.
For the baby corn, cut in half lengthwise and then cut in half.
Heat the oil in a large non stick pan or wok on medium heat, when hot, add the garlic and cook until lightly browned, then add the onion and fry until the onion is soft.
Add the baby corn. stir fry for a minute or two the add the mushrooms and stir fry until they are starting to soften, about 2-3 minutes, then add the sauces and stir fry to to mix in.
Stir fry until the liquid is thickened, pour onto a serving dish, sprinkle with coriander to garnish. Serve.