Day 1: Combine the dough ingredients and knead for 3 minutes until the dough comes together. Shape into a disc and refrigerate overnight.
Day 2: Cut cold butter into slabs and pound into a square. Roll out the dough into a square, place the butter in the center, and fold the dough over the butter. Roll out to a rectangle, fold letter-style, and refrigerate. Repeat this process two more times.
Day 3: Roll the dough into a long strip, cut into triangles, and shape into croissants. Proof the croissants for about 2 hours at 24ºC to 26.5ºC.
Preheat the oven and bake the croissants for 15-18 minutes until golden brown.