The so-called cotto dell'Impruneta owes its success to the peculiar properties of the clay found in the area, which is rich in iron, extremely malleable and both elastic and resistant. The clay comes from Impruneta and surroundings, for example from the smaller villages of Ferrone and Tavarnuzze and from the Val di Greve area.
The most common terracotta products that are made here are vases, dishes and bricks. Many large and small orci, which is the italian for a peculiar kind of terracotta vase, were also traditionally produced and used to carry high quality olive oil and wine (also produced in the region).
Over the centuries, the area’s resistant terracotta also came to be used for roofing
and decorating the facades of local houses
. Just to give you a hint, the tiles that cover Florence's Duomo
were baked in Impruneta