What is a Sandwich Maker – A Sandwich Maker is a kitchen appliance that is used to for making sandwiches. It consists of two hinged concave, round or square, cast iron or aluminium plates or griddles with long handles.
A sandwich maker is hinged, to adjust for the height of an assembled, uncooked sandwich. The hinge allows a lever action to press together two griddles in between which are two-slices-of-bread-with-a-filling. When the lid is closed, the bread brownx, and the ingredients in between will heat and combine so that when you remove the sandwich, it will be one cohesive ( at least if you use cheese) unit.
Sometimes the two griddles are flat and sometimes they are moulded in a relief pattern so that the heat and pressure from the ridges in the moulded metal seals the bread and fillings to form two enclosed triangles.