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1
Toast sesame seeds in a dry skillet over medium heat for 3–4 minutes, shaking frequently, until fragrant and lightly coloured; transfer to a bowl.
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2
Toast peanuts in the same skillet for 2–3 minutes until golden and aromatic; add to sesame.
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3
Toast coriander seeds for 2 minutes until fragrant; transfer to bowl.
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4
Toast cumin seeds for 2 minutes until fragrant; add to bowl.
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5
Toast black peppercorns for 1 minute; add to bowl and allow all components to cool to room temperature.
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6
Coarsely grind cooled ingredients in a mortar with a pestle or spice grinder, preserving some texture.
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7
Stir in dried chilli flakes and fine sea salt; transfer to an airtight container and store in a cool, dark place for up to 3 months.