Willett Astor Select Single Barrel is a cask-strength bourbon from a single barrel, bottled at a robust 65.7% ABV and carrying a stated age of 12 years. For a new drinker, that generally points to a fuller, more concentrated style than lower-proof bottlings.
As a bourbon of this age and strength, it is likely to show pronounced oak influence alongside the sweet, barrel-driven character commonly associated with the category. The high proof means it may drink hot and can benefit from slow sipping or a little water.