Which whisky allows the addition of caramel color?

The option indicating Single Grain Scotch Whisky is the one that allows for the addition of caramel color. This practice is allowed in the production of Single Grain Scotch to achieve consistency in appearance and to meet consumer preferences for a certain color profile.

In the broader context of whisky production, various types of whiskies have specific regulations about additives. For instance, Single Malt Scotch Whisky and Blended Malt Scotch Whisky cannot have any additives, including caramel coloring, to ensure purity and clarity in production. Tennessee Whiskey has its own regulations and is typically known for its charcoal filtering process, but it also doesn't allow additives that would interfere with the characteristic flavor profile.

By allowing caramel coloring in Single Grain Scotch Whisky, producers can maintain a consistent look across different batches, thereby meeting market demands while adhering to the regulations set forth for this category.