
In a bowl, mix the marinade ingredients: soy sauce, vinegar, sesame oil, and cornstarch.
Add the thinly sliced chicken to the mixture and toss to coat evenly.
Let the chicken marinate for 20-30 minutes to absorb all the flavors.
In another bowl, combine all the sauce ingredients: water, soy sauce, soy sauce alternative, vinegar, brown sugar, and cornstarch.
Stir well and set the sauce aside for later use.
Heat vegetable oil in a skillet over high heat.
Add the marinated chicken in a single layer, cooking until browned on both sides.
Remove the chicken from the skillet and set it aside.
In the same skillet, add the quartered mushrooms and sliced zucchini.
Stir-fry for 2-3 minutes until the vegetables are crisp-tender.
Return the chicken to the skillet with the vegetables.
Add minced garlic and ginger; cook for 1 minute, stirring constantly.
Pour in the prepared sauce and stir until the mixture thickens and everything is well-coated.
Serve the mushroom chicken hot.
Enjoy your delicious meal with family and friends!