1. Preheat oven to 200 deg F. Line a baking tray with parchment paper or aluminium foil.
2. Place slices of orange on the tray and bake until dried turning once every hour. (Took me 2 1/2 hours to dry the orange).
3. Toss all the spices together and process in spice grinder until ground to a fine powder.
4. Store in an airtight container and use as required.

Courtesy: http://veginspirations.blogspot.com/