Mix lamb mince with grated onion, garlic, cumin, coriander, paprika, chilli powder, cinnamon, parsley, salt and pepper. Shape into oblong koftas on skewers and chill for at least 30 minutes to firm up.
Preheat a grill, barbecue or pan until hot. Cook koftas for 3–4 minutes per side until charred and cooked through. Rest for a couple of minutes before serving.
For the sauce, stir harissa paste into yoghurt along with lemon juice and a pinch of salt. Taste and adjust depending on how fiery you’d like it. Drizzle over the hot koftas or serve on the side for dipping.