Add the garlic, panch phoron and turmeric and cook for another 2–3 minutes to allow the spices to release their flavour. Take the pan off the heat and allow to cool. Preheat the oven to 180°C fan.

Trim and cut into 1.5cm/5/8in cubes. Heat the oil in a large frying pan and, when hot, add the onion, cumin, chillies, panch phoran, garlic, ginger, potatoes and aubergines. Stir-fry for 5–6 ...