The next time you have a whisky you may contribute to restoring oyster stocks in Scotland. Oysters were abundant in the northeast of Scotland 10,000 years ago. But overfishing almost wiped out the oysters in the late 19th century. This month a project led by the Glenmorangie Distillery, a university and the Marine Conservation Society saw the official return of the oysters to Scotland’s Highland coastal waters after a century’s absence.