Once the mixture has cooled completely, knead it until perfectly smooth. This step is essential to reach the maximum creaminess that makes this recipe drool-worthy. After kneading, the dough will be non-sticky when pressed in between the palms.
Shape the pista dough into a log. Cover and set it aside.
Slightly grease the parchment paper sheet. Though parchment paper is already non-stick but trust me -greasing it really helps with rolling the white milk powder dough. Place the dough onto the greased sheet. Cover it with the other sheet and roll the dough as thin as possible.
Uncover the rolled dough.
Trim the uneven edges with a sharp knife. Remove the cut-out mixture and transfer it to the original conatiner.
Place the pista roll at one end.
Starting from that end, roll the two layers.
Roll as tightly as you can. While rolling, Press the layers together just firmly enough so they stick.
Once you reach the other end of the log, squeeze and secure the edges tightly.
Wrap the pista mithai roll tightly in parchment paper or a plastic bag. After wrapping, roll the log on a flat surface to create a tight cylindrical log.
Chill the pista roll in the refrigerator for an hour.
Once the desired time has lapsed, unwrap the pista roll.
Garnish with edible silver leaf and cut the log into round slices using a sharp knife. And don't worry, if your pista pinwheels come out more oval than round, they will still look elegant.
Serve and enjoy!