Marinated in spiced yoghurt, Kashmiri chillies, and garlic, then roasted over roaring tandoor charcoal embers with charred edges.
Knead the mince with toasted gram flour, onion, ginger-garlic paste, green chilies, coriander, cumin, garam masala, and salt until sticky; chill 1 hour.
Mold the mixture firmly around metal skewers into long sausages.
Cook over high heat, turning often.
Brush with butter and keep turning until charred and cooked through.
Slide off the skewers and serve with mint chutney and sliced onion.