Combine chicken with marinade ingredients in a large bowl, cover, and leave to marinate in the refrigerator overnight.
Heat oil in a hot wok until surface seems to shimmer slightly.
Add half the marinated chicken with the marinade and stir-fry for 1 minute.
Remove from wok with a slotted spoon and set aside.
Add remaining chicken and stir-fry for 1 minute.
Return reserved chicken to the wok with soy sauce and stir-fry for a further 2 minutes or until chicken is just cooked through and slightly caramelised.