To make the Sauce, combine all the ingredients in a bowl and set aside.
To make the Chili Paste, first cut the dried chilies into lengths, soak in hot water to soften, then deseed and drain. Grind the chilies, shallots, garlic and belachan to a smooth paste in a mortar or blender, adding a little water if necessary to keep the blades turning. Heat 2 tabl