To prepare the Maida dough, first we need to activate the Dry Yeast. Take Luke Warm Milk or Water in a cup. Water should be warm and not hot or else the Yeast might not get activated.
To it add a teaspoon of Sugar and dissolve it by stirring with the help of spoon. Sugar acts as a catalyst so it is added to water to activate the yeast.
Next add Dry Yeast to the water/milk and stir it to dissolve. Cover the cup and allow it to rest for about 15 minutes.
After 15 minutes you will see that froth bubbles are formed. Formation of froths indicates that the yeast has been activated. If froths are not formed, it means that the yeast has not been activated. Do not use it and try with another batch of yeast. Keep the activated Yeast aside.
Now take All Purpose Flour (Maida) in a large bowl. To it add Sugar, Vanilla Essence, Baking Powder, Salt and Butter. Mix all the ingredients uniformly.
Next add Milk and Activated Yeast to the mixture and knead the flour to prepare soft dough. Add Milk to the flour as required.
The dough should be soft after kneading. Softer dough will help in preparing soft texture doughnuts.
If in any case the dough is hard, add more milk and knead it again. When you add more milk to the dough, it will initially become sticky but keep kneading it so that after sometime the dough will absorb all the milk.
Once the dough is prepared, apply some butter all over the dough. Cover it with lid and allow it to rest for about 1 hour by keeping it aside in a warm place.
During this time, the dough will double in its size. Keeping the dough in warm place will help in proper leavening and fermentation of the dough.