Marinated in spiced yoghurt, Kashmiri chillies, and garlic, then roasted over roaring tandoor charcoal embers with charred edges.
Toss the prawns in lemon juice and salt, then coat in yogurt mixed with ginger-garlic paste, Kashmiri chili powder, cumin, and turmeric; rest 30 minutes.
Thread the prawns onto skewers.
Grill over high heat for 2-3 minutes per side, basting with butter.
Cook just until pink and opaque; do not overcook.
Serve with lemon wedges, sliced onion, and mint chutney.