Add salt in the flour and add water little by little in the flour. Make soft dough. Now take small ball and roll it with rolling pin, dusting dry flour on it often. When it is rolled about 5”, put it on hot Tawa (flat pan to bake Phulka). Heat should be medium high.
When you see small bubbles on it, turn it over. Again when you see bubbles on it, remove from Tawa and put it on direct fire. It will puff up. Remove from heat and spread butter on it.