Heat oil in a wok and sauté the shallots and garlic until golden brown.
Add the chicken, preserved soy bean paste, light soy sauce, dark soy sauce, ginger, cloves, star anise, potatoes and water. Stir then bring to the boil.
Put in the chillies, sugar and ground white pepper. Reduce heat and allow to simmer for 20–25 minutes until the chicken is tender.