What type of whiskey is specifically filtered through sugar maple charcoal?

The type of whiskey that is specifically filtered through sugar maple charcoal is Tennessee whiskey. This unique filtration process, known as the Lincoln County Process, involves passing the spirit through charcoal made from sugar maple before it is aged in barrels. This step is essential for enhancing the smoothness and flavor of the whiskey, giving it a distinct character that differentiates it from other types of whiskey.

Bourbon, while it has its own set of regulations and flavor profiles, does not undergo this particular charcoal filtering process. Scotch and Irish whiskeys, on the other hand, have different methods of production and typically do not include charcoal filtering as part of their maturation process. Tennessee whiskey is defined by this specific method, influencing both its legal classification and taste profile, thus making it the correct answer to the question.