Ingredients for the paste: 9 oz. of flour, the yelks of 4 eggs, a pinch of salt, a little tepid water.

Put the flour on a marble slab, make a hole in the centre, add the yelks of the eggs and the salt, make a paste, not too solid; when it is quite even, let it rest for an hour or two, and cover it with a cloth to prevent it from getting dry.