
Toast the coriander and cumin seeds in a dry frying pan for 2 - 3 minutes, shaking the pan constantly, to prevent burning. Combine the toasted spices with the peppercorns in a mortar and pestle or clean coffee grinder and work them until they are finely ground. Wrap the shrimp paste in a small piece of foil and cook under a hot grill for 2 - 3 minutes, turning the package twice. Process the ground spices and shrimp paste in a food processor for 5 seconds. Add the remaining ingredients and process for 20 seconds at a time, scraping down the sides of the bowl with a spatula each time, until the mixture forms a smooth paste. Refrigerate in an airtight container for up to 3 weeks.
Makes 1½ cups (375 gm)