What does "single" refer to in the context of single grain scotch whisky?

In the context of single grain scotch whisky, "single" specifically refers to the use of a single distillery. This means that all the whisky is produced at one distillery, which reinforces the character and style unique to that specific location. Single grain whisky can include various types of grains, not just malted barley, which is used in single malt scotch. However, the defining factor here is that it comes from only one distillery, making it distinct from blended grain whiskies that may combine products from multiple distilleries.

This distinction highlights the importance of the production source in whisky classification, and it illustrates how distillation practices and local influences can shape the flavor profile and quality of the spirit. Each distillery has its own methods and characteristics, contributing to the individuality of the single grain whisky produced there.