The Quaich was for centuries, a common domestic utensil, which originated in the West Highlands of Scotland. It was the dish from which the Scot supped his porridge and drank his ale.  Quaich is derived from the Gaelic 'cuach' which, in turn, derives from low Latin 'caucus' - a drinking cup.   These drinking cups were very widely used in Covenanting times and are mentioned in the old Jacobite song:

' Then let the flowing Quaich go round and
boldly let the pibroch sound
Till every glen and rock resound
The name o' Royal Charlie
Welcome Charlie, o'er the main
Our hieland hills are a' your ain
Welcome to our Isle again
Welcome Royal Charlie

 

The Quaich became the traditional toasting cup of welcome in Scotland or even good wishes upon farewell or parting. Surviving the centuries and mystique of history it is truly

Scotland's Cup of Friendship