Ciya Shish Kebabs from Mighty Spice Cookbook by John Gregory-Smith

Ingredients

• 1 handful mint leaves, finely chopped
• 4 spring onions, finely sliced
• 1 tsp sumac, plus extra to serve
• lemon wedges, to serve
• 4 flour tortillas
• 50 g/1¾ oz/½ cup roughly chopped walnuts
• 125 g/4½ oz fresh mozzarella, drained and roughly sliced
• 1 handful parsley leaves, finely chopped
• sea salt
• freshly ground black pepper
• 2 tbsp olive oil, plus extra for brushing
• 250 ml/9 fl oz/1 cup natural yogurt
• 400 g/14 oz minced beef
• 1 tsp ground cumin