Soak the chillies in hot water for about 15 minutes, then drain.
Heat a wok or heavy-based frying pan and, without adding any oil, dry-roast the cumin and coriander seeds, cinnamon, cloves, cardamom pods and peppercorns for 40–50 seconds. Tip into a spice grinder and grind to a powder.
Put the powder in a food processor with all the other ingredients, in