Chapter 4 of Bookers Little Book is a special release of the Bookers Bourbon brand. This release is a blend of two batches of bourbon, one aged for 8 years, 4 months and 15 days and the other aged for 8 years, 5 months and 15 days. The blend is bottled at a cask strength of 128.2 proof (64.1% ABV). The flavor profile of this bourbon is described as having notes of oak, caramel, vanilla, and spice.