Follow these simple steps to create a dish that is both flavorful and easy to prepare.

Step 1: Marinate Chicken

1. In a bowl, mix the marinade ingredients: soy sauce, vinegar, sesame oil, and cornstarch.
2. Add the thinly sliced chicken to the mixture and toss to coat evenly.
3. Let the chicken marinate for 20-30 minutes to absorb all the flavors.

Step 2: Prepare Sauce

1. In another bowl, combine all the sauce ingredients: water, soy sauce, soy sauce alternative, vinegar, brown sugar, and cornstarch.
2. Stir well and set the sauce aside for later use.

Step 3: Cook Chicken

1. Heat vegetable oil in a skillet over high heat.
2. Add the marinated chicken in a single layer, cooking until browned on both sides.
3. Remove the chicken from the skillet and set it aside.

Step 4: Cook Veggies

1. In the same skillet, add the quartered mushrooms and sliced zucchini.
2. Stir-fry for 2-3 minutes until the vegetables are crisp-tender.

Step 5: Combine

1. Return the chicken to the skillet with the vegetables.
2. Add minced garlic and ginger; cook for 1 minute, stirring constantly.
3. Pour in the prepared sauce and stir until the mixture thickens and everything is well-coated.

Step 6: Serve

1. Serve the mushroom chicken hot.
2. Enjoy your delicious meal with family and friends!