Ingredients
Equipment
Method
For the "simple dough" (use the hook)

- Mix water and vinegar. Add salt to dissolve it. Add flour and butter.

- Knead the dough at low speed. Stop as soon as the dough is smooth and homogeneous, about 2 min.

- Roll it out to give it a rectangular shape (the final size should be about half the size of the butter-flour).

- Wrap the dough in plastic wrap and leave it in the refrigerator for at least 1 hour.
For the "butter-flour" (use the flat beater)

- Pour the flour and cold butter into the food processor bowl.

- Mix at low speed until the butter has absorbed the flour, about 1 to 2 min.

- Roll out the dough with a pastry roll to give it a rectangular shape twice as large as that of simple dough. Film it and store in the refrigerator for at least 1 hour.

Combining the doughs (see details and videos above)
- Place the butter-flour on a well floured surface. In its center place the simple dough. Fold the butter-flour all around the simple dough, to trap it completely.

- Roll out the dough with a pastry roll, lengthwise.
- Make a single fold, turn a quarter turn (to have the opening facing you), spread out again lengthwise and then make a double fold.
- Wrap the dough and place in the refrigerator for at least 1 hour.
- Place the dough on a floured surface.
- Spread the dough lengthwise, make a single fold, turn a quarter turn, spread again and make a double fold. Wrap and place in the refrigerator.
- After at least 1 hour in the refrigerator, the dough is ready to use.
