Do not knead the dough with your hands, as your hands give off heat and the butter will melt.
If you have a blender with a bowl in your kitchen, you can simplify the task. To do this, simply send the flour and butter into the bowl and mix. Afterwards, pour in the water and whisk again.
If you would like to simplify the task even more, buy a puffed, yeast-free mortar.
We will need 300g.