- Marinate the chicken with cornflour, salt, chilli oil, Sichuan pepper and refrigerate for at least 2 hours. 
- Heat oil in a pan and shallow fry the chicken pieces; drain and keep aside. 
- Remove excess oil and roast the cashewnuts in the same pan and keep aside. 
- In the same pan (add more oil if necessary), sauté garlic and ginger for a minute. Add dry red chillies and sauté for one more minute on low heat. 
- Add chilli garlic sauce, cooking wine, sugar and mix well. 
- Add the chicken pieces and cashews; mix to combine. 
- Remove from heat and garnish with spring onions.