Take semolina in a wide bowl. Semolina must be of super fine texture. If you have big sized semolina, then grind it to fine quality.
Add salt and milk powder. (see notes)
Give them a mix and create a space in between the semolina.
Add activated yeast mixture.
Mix without adding water.
When all the yeast mixture mixes well, start kneading the dough by adding little water at a time.
When the entire semolina comes together, add 2 tsp of oil.
Knead the dough for good 8 to 10 minutes. This step is very important for better outcome of pav. Keep adding water as much as is required.
The consistency of dough must be slightly soft.
Grease a bowl in which the dough will be kept.
Put the dough in bowl and apply oil all over it.
Place a damp kitchen towel on the bowl, put a lid and keep it at some warm area of kitchen for about 1 hours. (see notes)
After 1 hour, the dough must have become double in size.