In a large bowl, combine lamb mince, onion, cumin, harissa paste, parsley, and a good pinch of salt and pepper. Mix well. Divide into 4 portions and shape into burgers. Refrigerate for 30 mins.
Preheat BBQ or a heavy-based pan to medium. Brush patties with oil and cook for 5–6 mins per side, or until just cooked through.
Arrange burgers, bread, dips and toppings on a large platter, and let everyone serve themselves.
Tips
Part or all of the harissa can be replaced with tomato paste if preferred.