Pâté moulds are for shaping pâtés in.
They can be oval, or a long and narrow rectangle. There are no standard dimensions or volumes; you can even get mini ones now.
They can be made of copper, non-stick coated metal, stainless steel, ceramic, earthenware, tin, tinned steel, or enamelled cast iron. The enamelled cast iron ones often come with lids.
Springform ones are also available. Even the oval ones now come in springform shapes.
Special ones for “pâté en croûte” have fluted edges, that help prevent the pastry from sticking to the sides of the pan.
Butter and line with parchment paper.
Sometimes called a “terrine.”