Add the milk, ¾ cup lukewarm water and yeast to a small mixing bowl and stir to combine. Let the mixture sit for 10 minutes.
In the bowl of a stand mixer fitted with a dough attachment, add the flour salt and sugar. Make a well in the middle of the bowl and pour the yeast mixture in the center. Mix on medium speed, until the dough is elastic and smooth, about 8 minutes.
Transfer the dough to a mixing bowl, cover with plastic wrap and let rise at room temperature for 1 hour.
Turn the dough out onto a clean, lightly floured surface. Press the dough into a large rectangle, fold it into thirds and allow to proof for 20 minutes.
Lay the butter in between two pieces of plastic wrap then use a rolling pin to pound it until it becomes flat. Once the butter is pliable, roll the butter out into a 7” by 10” rectangle. Transfer the butter to the refrigerator to chill.
Roll the dough out into a 24” by 8” rectangle. Place the butter sheet into the middle of the dough and fold the sides of the dough into the center to enclose the butter, like you would fold a letter. Pinch the edges to seal them.
Flatten the dough and butter slightly with the rolling pin and turn it over. Roll the dough back out into a 24” by 8” rectangle. Fold over one of the short sides of the dough, then the other, so that the dough is again folded into three layers, like a letter and forms a square.
Again, press the open ends with the rolling pin to seal them. Repeat this process of turning the dough two more times, rotating the dough 90-degrees each time. The dough should have been turned a total of 4 times.
Wrap the dough in plastic and chill an hour minutes until firm. At this point the dough can also be chilled overnight.