2. Rub the spice over the chicken breasts and put them in a bamboo steamer.
3. Half-fill a pot with water and add 1 tablespoon of tea leaves. Put the steamer on top, cover tightly and steam for approximately 30 minutes, until the chicken is cooked. Remove the chicken.
4. Line a wok with tin-foil. Put the brown sugar and remaining tea leaves in the bottom. Position a rack over the top, leaving a few centimetres clear. Place the chicken on the rack and cover. It will take a few minutes before you have smoke. Leave it for 5 minutes before turning the chicken and smoking for a further 5 minutes. Remove from the heat and leave the chicken in the smoker for 10 minutes.