Literally "man of the night" .
The most delicate job is carried out during the night, a true alchemy.
The secrets of the composition of the siliceous sand, of the alum (or Soria sand) are cherished by the master.
The "crogioli" or slow-baking furnaces - that have different names depending on their dimensions: "palea", "ninfa" and "curisiol" -, are loaded with the compositions ordered by the master two or three times every day, each with a total amount of 500 kg of product. The compositions boils overnight and the following morning at seven o'clock