Here we go:
750 g (6 cups) all-purpose flour, 137 g (1+1/4 cups) dark cocoa powder, 1 teaspoon (8 g) salt. Set aside.
454 g (2 cups) softened butter, 400 g (2 cups) of granulated sugar and 228 g (1 cup) of light brown sugar. Cream until fluffy and pale, about 5 minutes.
Beat in 3 cold eggs,
until just combined
Add dry mixture and mix on low speed until thoroughly combined
Add vanilla and blend.
You can cut a little of the tips...
...to make the dough fit between the dowels no widest than your rolling pin
Preheat the oven 325ºF/160ºC.
Remove from fridge and cut your shapes using the selected cutters...
Bake untill cookie edges are just crisp, about 16 minutes.
It yelds about 40 medium cookies, depending on shape/size.
Ok, you can't do this cookies if you're in a hurry, but if you find motivation to do something special, it really, really worth it.