Beer has been produced in Scotland for approximately 5,000
years. The Celtic tradition of using bittering herbs remained in
Scotland for longer than the rest of Europe. The two main cities
of Scotland, Glasgow and Edinburgh, are where historically the
main breweries developed; and Edinburgh in particular became a
noted center for the export of beer around the world. Though by
the end of the 20th century small breweries had sprung up all over
Scotland.
Despite a widespread belief that beers in Scotland used fewer
hops than in England, all the available evidence shows that the
Scots imported hops from around the world and used them
extensively.