Barbecue lamb flatbreads Serves: 4-6 Ingredients 6 skewers 600g lamb leg steaks in bite-sized pieces 2 tbsp olive oil 1 lemon, zest and juice 3 cloves garlic, crushed 2 tsp dried oregano 6 shallots, peeled and quartered salt and freshly ground black pepper To serve: 6 flatbreads, wraps or pitta bread 200g tub tzatziki sliced