My buddy had given one to all of his groomsmans (me included) when he got married. Ive since discovered the single malts and want to know more about this thing.
from what i heard, it was used as a welcome manner when visitors entered your home. You were then served a dram in the quaich. It was just a way of saying welcome in my house. Thats what the lady said anyway when i asked her about it in a store where they sold them, in Scotland.
"The Quaich originated in the Scottish Highlands centuries ago and became the favourite drinking cup throughout scotland. Traditionally, the Quaich is used when offering a guest "the cup of welcome" and again when offering the farewell or parting drink."
like so QuaGH thats how it sounds, you have no idea how i pronounced it to the lady in the store, but she looked at me in a very funny way and it took her awhile before she knew what i ment.