Sauté the paste ingredients and galangal with little oil. Put 3 tbsp sweet soy sauce, light soy sauce, brown sugar, tamarind, 1 tsp white pepper, salt, chili power, kaffir lime leaves, bay leaf and water. Cook until the sauce becomes rather thick. Take 2 tbsp of the sauce, put into a bowl and set aside (we gonna need this for basting mixture).

Cut the meat into cubes, rub with the sauce and put in a bowl. Cover the bowl and marinade in the fridge for 6-8 hours. Remove the meat from the bowl and thread meat cubes onto the skewers.

Basting Mixture : Mix 2 tbsp of marinade sauce with 3 tbsp sweet soy sauce, 1/2 tsp white pepper and melted butter.

Brush the meat with basting mixture. Grill the satay until the meat color changed, then turn the satay over. Brush again the meat with basting mixture and continue grill the satay until the meat cooked.

Serve with warm steamed rice and sambal.