It is then smeared over with the brain of the animal and hung up in the sun for four days.

The next step is to wash it well in warm water in a wooden trough.

Then it is well kneaded, and two people taking hold of it draw it out of the water and stretch it well between them.

It is dried again and is then tanned with the crushed bark of the big-leaved oak-tree.
A natural cavity in a rock is chosen for a vat, in which the skin is left for two days.

After this it is well rinsed and squeezed until no water remains in it.