This works as a gorgeous topping for all sorts of desserts, and also as a component in Jamie's Taco Party from Together – see the full collection of menus here.
GET AHEAD Put the cinnamon, coriander seeds and allspice into a pestle and mortar. Crumble in the chilli, add the cocoa powder and the icing sugar, and pound until fine. Sieve the mixture into an airtight jar ready to use. Delicious served with Chocolate semifreddo. Leftovers will be an absolute treat sprinkled over ice cream or used to make a lovely mug of hot chocolate.