Place a medium frying pan or skillet over low heat.
Add coriander seeds, cumin seeds, fennel seeds, black peppercorns, green cardamom pods, black cardamom pods, cloves, cinnamon stick, star anise, dried bay leaves and nutmeg.
Fry, stirring continuously, for 4-5 minutes or until fragrant. Remove from heat. Cool completely.
Alternatively, you can toast the spices in the oven. Preheat oven to 150 C / 300 F. Line a baking sheet with baking paper. Arrange the spices in a single layer. Toast for
about 5-7 minutes or until fragrant.
Place toasted and cooled spices in a spice grinder or food processor. Process to smooth powder. Store in an airtight container for about 6-7 months.