“Cotto di Minturno” uses local fossil clays exclusively. Particularly rich in aluminates, silicates, carbonates and sulphates, our local clays are appreciated in particular because they are easily workable and also for the nice straw-yellow colour they take after they have been fired. Thanks to these requisites they were fully been appreciated by southern ceramists, to the extent that, until the whole 19 century, they were constantly commercialised and almost all Neapolitan ceramic laboratories used them.

The procedure followed by “Cotto di Minturno”, still today, makes use of methods essentially traditional.
Only preliminary operations of washing and purification are made by a technologically advanced plant. The clays are then moulded and given the finishing touch by hand following the slow and hard systems of tradition. Every single tile is made by stamping down the clay into wooden moulds exerting pressure only by hand. This confers the product a honeycomb porous structure and a warm skin effect on the surface, as well as, of course, a unique characteristic to every single piece.
The slow drying process profits also from the warm and humid climate of the area which allows the processed clay to get the suitable firing without loosing any humidity. The final product, once taken out of the kiln, takes the denomination of "cotto grezzo".