Step 1

Place dried chillies in a small heatproof bowl. Cover with boiling water. Stand for 10 minutes or until softened. Drain.

Step 2

Place coriander, paprika, cumin and turmeric in a small frying pan over medium heat. Cook for 1 to 2 minutes or until fragrant. Allow to cool completely.

Step 3

Place chillies, onion, lemongrass, galangal, nuts, garlic, shrimp paste and spice mixture in a food processor. Process until finely chopped. Add oil. Process until a smooth paste forms. Refrigerate in an airtight container for up to 1 week.