Which type of whiskey must be produced in Scotland?

Scotch, or Scotch whisky, specifically refers to whiskey that must be produced in Scotland. This type of whiskey is made from malted barley or grain and is aged in oak barrels for a minimum of three years. The unique production regulations and geographical indications ensure that Scotch embodies the characteristics defined by its Scottish origins, including specific methods of distillation, fermentation, and aging.

In contrast, other types of whiskey like Bourbon, which is primarily made in the United States, and Tennessee whiskey, which also has distinct regulations specific to its production in Tennessee, do not originate from Scotland. Blended whiskey can refer to a mix of different types of whiskeys, which can include Scotch from Scotland, but it is not exclusively produced there. Thus, the defining factor of Scotch is its requirement to be produced solely within Scotland, making it the correct choice.