Optional - velveting the chicken : Combine chicken and baking soda in a small bowl and toss to combine. Set aside for 10 minutes to marinate, then rinse chicken well and pat dry.
To make Chow Mein Sauce, place the Chow Mein Sauce ingredients in a small bowl and mix to combine.
Prepare the noodles according to the packet instructions.
Heat oil in wok or large fry pan over high heat.
Add garlic and stir fry for 30 seconds until the garlic is golden brown and you can smell the garlic in the oil.
Add chicken and stir fry until the skin is white but the inside is still raw - about 45 seconds to 1 minute.
Add the cabbage, carrot, and the white pieces of shallots/scallions (i.e. from the base of the stalk). Stir fry for 1 - 1½ minutes until the cabbage is just starting to wilt and the chicken is cooked through.
Add the noodles, sauce and water. Stir fry for 1 minute, tossing to coat the noodles in the sauce.
Add bean sprouts and remaining shallots/scallions. Stir through quickly then remove from heat.