Cantonese rice wine, or mi jiu, which is a pale, light alcohol, makes a good marinade for the chicken in this dish, combined with the flavours of celery, garlic and ginger.
Cut the chicken into 2.5 cm/1 in cubes. Put the rice wine in a bowl and blend in the garlic, ginger, pepper, sugar and salt. Stir in the chicken to coat evenly and leave to marinate for 15 minutes.
Heat the oil in a wok over a high heat. Fry the celery for 30 seconds, then reduce the heat slightly and add the chicken and its marinade. Stir-fry for 2 minutes, or