2 aubergines
1–2 green chillies, finely chopped or sliced
large handful fresh coriander (leaves and stalks), finely chopped
2 tsp finely grated garlic
1 tbsp finely grated fresh root ginger
2 potatoes (approx. 400g/14oz), peeled and cut into 1.5cm/5/8in cubes
1 red onion, chopped
5 large, ripe tomatoes, finely chopped
400ml tin coconut milk
salt and freshly ground black pepper
1 tsp cumin seeds
1 tsp garam masala
5 tsp panch phoran spice mix
2 tbsp vegetable oil