It is a tool used by bakers to manipulate dough and to clean surfaces on which dough has been worked. It is generally a small sheet of stainless steel with a handle of wood, plastic, or simply a roll in the steel blade along one of the long sides.
It’s a mix between slicing and paring knives. It features scalloped edges and blades that are slightly longer than standard paring knives.
It’s also known as a bain marie, is used for a variety of cooking tasks, and they’re commonly used in bakeries and cafes for melting and cooking delicate foods.