Crush the orange peel, garam masala, and coriander with a mortar and pestle. Stir in the salt.
Pat the steaks dry with paper towels, and rub the spice generously on both sides of the steaks. Cover with plastic wrap and refrigerate for at least 6 hours, and preferably overnight.
When you’re ready to cook, preheat the grill to high and brush the grates with a little oil. Drizzle a