This is definitely the most work intensive day for this project and you need about 3 hours of time. I started by taking out my butter from the fridge or even freezer and weighing. The butter I use is very soft (Kerrygold) due to its high fat content. If you’re using a store brand butter, it will be hard to work with straight out of the freezer.
Once I had the correct amount of butter ready, I start slicing it into half inch thick slices. I tried hard to keep them the same width to make it easier later. I arranged these slices into a square roughly 6-7 inches wide on some parchment paper to make the butter easier to handle. Don’t over think this part because you’re going to be rolling this out and cutting it anyway.
I then rolled my butter out to about 9-10 inches between two sheets of parchment. At this stage my butter chunks fused into a large slab. I cut the edges to make the slap more square and placed the cut bits back on top and re-rolled. I used the parchment paper and my fingers to shape it as well. Do whatever you can to get this thing mostly square and roughly 9 inches on each side.
Once my butter was a shape I was happy with, it went into the fridge while I worked on rolling out my dough. I fished out the dough from the previous day which should have puffed a bit overnight.
I rolled this dough out into a 13 to 14 inch square on a very lightly floured surface. Try to use only as much flour as is necessary to avoid toughening your dough as you repeatedly Rolls it out. If you want advice on how to Roll a square successfully, I’m sure there are good YouTube videos out there. I am still mastering this skill myself but essentially I found that a combination of things gives decent results. When you put your dough on your surface it will be rounded. Use your rolling pin to indent a cross in the dough and then rolling from the middle out towards each corner. This will get your shape started. Shape it with your hands or bench scraper as you go and try to roll mostly from the middle. Binge watch some of Great British Baking Show, they have examples of this every so often and it’s a great show!
Once I was happy with my dough square, I got that butter out and put it so that the corners of my butter were against the sides of my dough square. Like a buttery diamond on my square dough. Then I folded the corners of my dough to the middle so the butter was fully enveloped
My butter encased in dough was then rolled, still from middle out, along just one axis until I had a long sheet that was about 30 inches in length. I then folded it into thirds like a letter and placed it on a small cutting board. It was then covered in plastic to keep it from drying out and placed int he fridge for 30 minutes.
After half an hour, the dough was brought out again and rolled out again To roughly 30 inches. I like to keep my open ends facing up and down and rolling it out towards the open ends. This way each time I fold, fridge and roll, it is rolled in a different direction. This dough is rolled out so much that resting the dough, relaxing the gluten, and the rolling direction are very important.
Again, the dough was folded in thirds and refrigerated for an hour.
Repeat steps 7 and 8 one more time and leave the dough to rest in the fridge overnight. If you’re following along with the math, this will results in 27 layers.