Begin by toasting coriander, cumin, cardamom and peppercorns in a skillet over medium heat. Shake the skillet and stir occasionally to toast the spices evenly.
Once the spices are toasted and the aromas released, remove them and set aside.
In a mortar and pestle or coffee grinder, grind the cooled spices.
Add in the grated nutmeg.
Store in an airtight container in a cool, dry place.