Add salt, milk,one table spoon oil and water to the wheat flour and mix it well make dough and kept aside for 30 minutes.
Take a pan on stove add 2 table spoons of oil, after heat the oil add cumin,mustard, bengal gram seeds and curry leaves and fry them and add onions, green chilies.
After fry the onions add ginger garlic paste, turmeric powder, salt to it and add potatoes and fry them well and finally add coriander leaves and off the stove and make the curry cool.
Take the wheat flour dough, make it paratha's and put some curry, middle of the paratha and fold it roundly and again press it like paratha by hand. Make all the paratha's like that.
Take tawa on stove,heat the paratha both sides by adding butter, turn it in to the serving plate, heat all parathas like that.Now taste the smoothy, tasty alu paratha.