Place the star anise, cinnamon and cloves in a dry frying pan over medium-high heat and cook, stirring and shaking the pan, for 4-5 minutes or until fragrant and just starting to smoke.
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Remove from heat and transfer the spices to a plate or bowl and allow to cool. Now do the same process with the fennel seeds and Sichuan peppercorns but these will only take 2-3 minutes.

Use a coffee or spice grinder to grind to a fine powder. Sieve to remove any larger pieces of spices and simply