Now the dough with the sealed in butter needs to be rolled out. With a lightly floured rolling pin start rolling out, on a lightly flour dusted surface, the dough to a rectangle of 20 x 60 cm. Start rolling from the center of the dough towards the edges, and not from one side of the dough all the way to the other side. This technique helps you to keep the dough at an even thickness. You can also rotate your dough 180 degrees to keep it more even, because you tend to use more pressure when rolling away from you than towards yourself. You can use these techniques during all the rolling steps of this recipe. Aim at lengthening the dough instead of making it wider and try to keep all edges as straight as possible.
Fold the dough letter style, cover with clingfilm and refrigerate for 30 minutes (fold one third of the dough on top of itself and then fold the other side over it). Repeat the rolling and folding two more times (ending up with 27 layers in total), each time rolling until the dough is about 20 cm x 60 cm. After each fold you should turn the dough 90 degrees before rolling again. The open ‘end’ of the dough should be towards you every time when rolling out the dough. After the second turn, again give it a 30 minute rest in the fridge. After the third turn you leave the dough in the fridge overnight until day 3, the actual croissant making day!
3.Dividing_the_dough
Take the dough from the fridge. Lightly flour your work surface. Now very gently roll the dough into a long and narrow strip of 20 cm x 110 cm. If the dough starts to resist too much or shrink back during this process you can fold it in thirds and give it a rest in the fridge for 10 to 20 minutes before continuing. Do not fight the dough, when the dough refuses to get any longer, rest it in the fridge! It is such a shame to ruin two days of work.
When your dough has reached its intended shape, carefully lift it a few centimeters to allow it to naturally shrink back from both sides. This way it will not shrink when you cut it. Your strip of dough should be long enough to allow you to trim the ends to make them straight and still be left with a length of about 100 cm.
Shaping_the_croissants
For the next stage you will need a tape measure and a pizza wheel. Lay a tape measure along the top of the dough. With the wheel you mark the top of the dough at 12,5 cm intervals along the length (7 marks total). Now lay the tape measure along the bottom of the dough and make a mark at 6,25 cm. Then continue to make marks at 12,5 cm intervals from this point
(8 marks total). So the bottom and the top marks do not align with each other and form the basis for your triangles.
Now make diagonal cuts starting from the top corner cutting down to the first bottom mark. Make diagonal cuts along the entire length of the dough. Then change the angle and make cuts from the other top corner to the bottom mark to create triangles. Again repeat this along the length of the dough. This way you will end up with 15 triangles and a few end pieces of dough.
Using your pizza wheel, make 1.5 cm long notches in the center of the short side of each dough triangle.
Now very gently elongate each triangle to about 25 cm. This is often done by hand, but we have found that elongating with a rolling pin, very carefully, almost without putting pressure on the dough triangle, works better for us. You can try both methods and see what you think gives the best result.
After you cut a notch in the middle of the short end of the triangle, try and roll the two wings by moving your hands outwards from the center, creating the desired shape with a thinner, longer point. Also try and roll the dough very tightly at the beginning and put enough pressure on the dough to make the layers stick together (but not so much as to damage the layers of course).
Proofing and baking
Arrange the shaped croissants on baking sheets, making sure to keep enough space between them so they will not touch when proofing and baking. Combine the egg with a teaspoon of water and whisk until smooth. Give the croissants their first thin coating of egg wash.
Proof the croissants draft-free at an ideal temperature of 24ºC to 26.5ºC (above that temperature there is a big chance butter will leak out!). We use our small Rofco B20 stone oven as a croissant proofing cabinet by preheating it for a minute to 25ºC / 77ºF. It retains this temperature for a long time because of the oven stones and isolation. The proofing should take about 2 hours. You should be able to tell if they are ready by carefully shaking the baking sheet and see if the croissants slightly wiggle. You should also be able to see the layers of dough when looking at your croissants from the side.
Preheat the oven at 200 ºC / 390 ºF convection or 220 ºC / 430 ºF conventional oven.
Right before baking, give the croissants their second thin coat of egg wash. We bake the croissants in our big convection oven for 6 minutes at 195ºC, then lowering the temperature to 165ºC, and bake them for another 9 minutes. Hamelman suggest baking the croissants for 18 to 20 minutes at 200ºC, turning your oven down a notch if you think the browning goes too quickly. But you really have to learn from experience and by baking several batches what the ideal time and temperature is for your own oven. Take out of the oven, leave for a few minutes on the baking sheet, then transfer to a cooling rack.
Best eaten while warm and fresh of course. Croissant we don’t eat or share within a day we freeze. We put them in the preheated oven (180 ºC / 355 ºF) for 8 minutes straight from the freezer. Nothing wrong with that, croissants eaten nice and warm, almost as good as the fresh ones