Pork and Chicken Stew

In a mortar or food processor, pound or grind the salt, peppercorns, garlic and coriander roots to an even paste. In a wok, heat the oil and fry this paste for about 1 minute or until fragrant. Add the water, soy sauce and palm sugar. Stir over heat until sugar is dissolved. Add the chicken and pork pieces and additional water, if necessary, to just cover. Bring to a boil and add the bean curd,