Dissolve 1 to 1 1/2 tsp yeast and 1 tbsp sugar in warm water.
When yeast is raised, mix with 1/2 kg plain flour, salt to taste and 2 to 3 tbsp butter. Knead with milk or water and put aside for 2 to 3 hours. Fold over kneaded dough using hands and divide into equal portions.
Roll each portion into a flat naan and make fork marks on it. Bake in a pre heated oven at 200 c for 8 to 10 minutes. When naan turns into a nice golden brown color, brush with butter and bake for another couple of minutes. Roghni naan is ready to serve.