Ostrich: Slice the ostrich into wide thin strips and set aside. Soak the wooden skewers in water (for at least 30 minutes).
Spice Mix: Place all the ingredients in a food processor and so that you have a coarse crumb mixture. Place in a bowl.
Kebabs: Place the ostrich strips into the spice mixture and coat them well. Thread single strips of steak onto the wooden skewers. Place them on a tray and cover them with cling film and leave them for at least 1 hour before cooking.
To Cook: Heat a grill to a high heat or barbecue. Brush the kebabs with oil and grill under a high heat for 8 minutes turning halfway or on a hot barbecue.
To Serve: Place 4-6 kebabs on each plate with a spoonful of yoghurt and garnished with plantain slithers (optional). Serve.