It couldn't get simpler than this! pound the ingredients with a pestle and mortar until it becomes powdery and evenly distributed.
Rub the mixture over the meat or fish and allow it to marinate for 2 - 3 hours if you can (but if you're in a hurry, 30 minutes will just about do it!)
Recipe by The Paleo Network at https://paleo.com.au/recipe-cajun-spice-marinade/