Divide the dough into 8 equal portions and shape each into a ball. Arrange them on a surface dusted with flour, then drape a damp cloth over the top to keep them moist.
Place a heavy skillet over medium heat, add 300 g tomato, puréed, and cook for 5 to 8 minutes until reduced. Stir in 0.3 g salt, 25.2 g granulated sugar and the spices for the tomato filling, cooking for another few minutes until the sauce turns thick. Take off the heat, fold in 100 g grated cheese, and let the mixture cool completely.
If baking in an oven, preheat it to 200°C (400°F).
Flatten each ball of dough between your palms and place a portion of the cooled tomato-cheese mixture in the centre. Pinch the edges together tightly over the filling to seal, roll back into a ball, then flatten again and stretch gently into an elongated oval.
Cook using a tandoor or an oven: for a tandoor, transfer each naan with a cushioned pad to the inner wall and bake for 2 to 3 minutes before lifting out with tongs; for an oven, arrange the naans on a greased baking tray and bake for approximately 10 minutes until cooked through and lightly browned.
Use the same weight of any plain wheat dough, rest it 20 minutes, then roll and cook as for naan. It will be less enriched and less soft than restaurant naan dough.
For 100 g naan dough, use about 60 g self-raising flour mixed with 40 g yoghurt or water to a soft dough; rest 20 minutes. The result is less chewy and less rich.
Use 40% to 50% of the fresh tomato weight mixed with a splash of water. Imparts a deeper red colour, thicker sauce, and slightly sweeter cooked flavour.