Heat some oil in a wok and fry ingredient. Add some water and stir again, then add the meat. Stir well, add some water and stir again, add sugar and fish sauce.
When the meat is already quite dry, stir constantly until all humidity is gone and the meat rolls in the wok.
Taste, and add the long red, yellow and green chillies as well as the green pepper and the kaffir lime leaves and stir until all is well combined.