DECANTER
a bottle especially designed for the service of wines, liquors, etc.
It is often difficult to clean decanters, especially after port wine has stood in them for some time. The best method is to wash them out with a little pearlash and warm water adding a spoonful or two of fresh-slacked lime, if necessary. A few small cinders or pieces of raw potato may be used to facilitate the action of the fluid against the side of the glass. A little strong oil of vitriol will also rapidly clean glass bottles.