In a small bowl, combine ½ cup milk and 2 teaspoon lemon juice. Mix well and set aside for 10 minutes.
In another bowl, sift maida, wheat flour, baking powder, milk powder and salt.
To it, add sugar, oil, curd and milk+lemon juice mixture. Mix well till everything gets combined well gradually adding about ¼ cup water. Dough will be sticky. Do not over-knead.
While you are kneading the dough, pre-heat oven to 180 degrees Celsius.
Grease rectangular baking tin with generous amount of oil/butter.
Spread little oil on the dough and lift the dough with greased hands.
Make log shape and fold both the edges. Now flip the roll and pinch lightly to seal.
Put dough inside the tin and apply milk on the dough.
Bake in a pre-heated oven at 180 degrees Celsius for 30 minutes or until the top turns light brown. After 25 minutes, open the oven and apply oil on the bread. Then bake for another 5 minutes.
Once baked, take it out of oven. Top part will be hard. Immediately apply butter on top.
Cover and let it cool for 15 minutes. Then invert and keep on a wire rack.
Again cover and let it cool down completely on the wire rack for atleast for 2-3 hours.
Once the bread cools down completely, slice and enjoy.