A decanter is a type of bottle-shaped container with a large body with the double purpose of decanting the solid remains of the wine, in addition to allowing it to breathe and thus better display its aromas. Decanters can vary in volume, shape and design. They can generally be made from inert materials (such as glass) and can contain the volume of a standard bottle of wine (0.75 liters).[1]​.

The decanting manholes of traditional cisterns are usually very simple, consisting of a pool interspersed in the water path, prior to discharge, in which all the heavy solid material carried by the fluid was deposited, with a gap that could be closed with a plug that was usually made of a thick wooden block wrapped in a piece of jute sack.[2]​.