Tian

A tian is an earthenware vessel of Provence used both for cooking and serving. It is also the name of the dish prepared in it and baked in an oven. Tian comes from the ancient Provençal word designating a terracotta cooking dish, and is also used to refer to food prepared in it. The word comes from the ancient Greek "teganon" . The classic vessel is a truncated cone, flattened at the base and flaring outward to a wide rim. It is traditionally glazed on the inside, and unglazed on the outside. It is shallower than the cassole, the earthenware vessel characteristic of the Camargue and Languedoc. The shape has become less definitive, though the earthenware body remains key.

Source: Wikipedia