What do tannins contribute to a spirit?

Tannins, which are naturally occurring compounds found in various plants, particularly in the skins, seeds, and stems of grapes, contribute significantly to the complexity of spirits, particularly those aged in oak barrels. They create a smooth structure and mouthfeel, balancing sweetness and acidity, while also imparting unique flavor characteristics.

The correct answer highlights that tannins contribute to coconut-flavored lactones and volatile phenolic acids. When spirits are aged in oak barrels, tannins interact with the wood to extract compounds such as lactones, which can impart flavors reminiscent of coconut or vanilla. Additionally, these tannins influence the presence of phenolics, which can add to the aromatic complexity of the spirit.

This interaction with wood not only affects the flavor profile but also helps integrate the spirit's raw components more harmoniously. Understanding the role of tannins is essential for appreciating how barrel aging transforms a spirit's character and depth.