Knead all the ingredients except the Croissant Butter.
Divide into 4 kg dough balls and let them rest, covered, on the counter for 15 minutes.
Roll out on a baking sheet and refrigerate overnight.
Give each ball two single folds, then rest for two hours in the refrigerator.
Give two more single folds.
Let it rest for at least two hours in the refrigerator.
Roll out to a thickness of 4 mm and cut out circles measuring 26 cm, 22 cm and 16 cm, and cut a 5 cm circle in the centre of each circle.
Let it rest at room temperature for 2 hours and bake at 150 °C for 30 minutes.