Marinated in spiced yoghurt, Kashmiri chillies, and garlic, then roasted over roaring tandoor charcoal embers with charred edges.
Slit the chilies lengthwise on one side and carefully remove the seeds, keeping the stems on.
Mix the mashed potato, paneer, cumin powder, amchur, red chili powder and 1/2 tsp salt.
Fill each chili generously with the spiced potato-paneer mixture.
Brush with mustard oil and grill over high heat (or roast in a hot tandoor) until the skins blister and char lightly.
Serve hot, sprinkled with a little extra salt and lemon juice.