1 Little Gem lettuce, finely sliced
1 garlic clove, chopped
2.5cm/1in piece fresh ginger, peeled and chopped
1½ tbsp lemon juice
½ onion, finely sliced
2 tomatoes, finely sliced
150ml/5fl oz chutney
¾ tsp chaat masala (optional), available from Asian stores and some supermarkets
¼-½ tsp red chilli powder, or to taste
Generous pinch green and black cardamom seeds and fennel seeds, ground together
2 rounded tbsp gram flour
1 tsp garam masala
oil, for brushing
¾-1 tsp salt, or to taste
1 tbsp vegetable oil
2 tbsp melted butter, to baste
30g/1oz cheddar cheese, coarsely grated
1 free-range egg, beaten
150ml/5fl oz Greek-style yoghurt
400g/14oz chicken breasts, skin and bones removed, cut into 2.5cm/1in cubes
5 ready-made flour tortillas, wrapped in foil and placed in the oven for the last five minutes of cooking