1 fresh, hot green chilli, cut into very fine rounds
2-3 tbsp fresh coriander, chopped
1 clove garlic, very finely chopped
1cm/0.5in piece fresh ginger, peeled and cut into very fine slices, then into very fine strips
60g/2oz onion, halved and cut into very fine half-rings
salt and freshly ground black pepper to taste
1 tsp curry powder
180g/6oz tinned tuna, in oil
1陆 tbsp vegetable oil
chapati or roti, to serve