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Unwrap and lay the dough on a lightly floured work surface. Roll it out to a 10-1/2-inch square, and brush off the excess flour. Take the butter out from the refrigerator —it should be cold but pliable. If it isn’t refrigerate it till it is. This so that when you roll out the dough with the butter in ti, neither should it be soft enough to melt, or hard enough to break. Unwrap the butter and place it on the square of dough in the centre, so that it forms a “diamond” shape on the dough.
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Fold one flap of dough over the butter toward you, stretching it slightly so that the point just reaches the middle of the butter square. Bring the opposite flap to the middle, slightly overlapping the previous one. Similarly repeat with the other two so that the dough forms an envelope around the butter. Lightly press the edges together to completely seal the butter inside the dough to ensure the butter doesn’t escape when you roll out the dough later.
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Lightly flour the top and bottom of the dough. With the rolling pin, firmly press along the dough uniformly to elongate it slightly. Now begin rolling instead of pressing, focusing on lengthening rather than widening the dough and keeping the edges straight.
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Roll the dough into an 8” by 24” rectangle. If the ends lose their square shape, gently reshape the corners with your hands. Brush off the excess flour. Mark the dough lightly equally into three along the long side. Using this as a guideline, pick up one short end of the dough and fold 1/3rd of it back over the dough, so that 1/3rd of the other end of dough is exposed. Now fold the 1/3rd exposed dough over the folded side. Basically, the dough is folded like 3-fold letter before it goes into an envelope (letter fold). Put the folded dough on a floured baking sheet, cover with plastic wrap, and freeze for 15 to 20 minutes to relax and chill the dough.
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Repeat the rolling and folding, this time rolling in the direction of the two open ends (from the shorter sides to lengthen the longer sides) until the dough is about 8” by 24”. Once again fold the dough in thirds, brushing off excess flour and turning under any rounded edges or short ends with exposed or smeared layers. Cover once again with plastic wrap and freeze for another 15 to 20 minutes.
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Roll and fold the dough exactly in the same way for the third time and put it baking sheet. Cover with plastic wrap, tucking the plastic under all four sides and refrigerate overnight.