Buffalo Trace Distillery has just revealed its limited-edition Single Oak Project, a collection of 90-proof bourbons that will sell for $46 for a 375-ml bottle. This decades-in-the-making project is a goldmine for whiskey lovers.

The project began more than two decades ago, when Buffalo Trace hand selected specific trees to create barrels to make their bourbon. Here’s how Buffalo Trace describes the process:

It all started with 96 individually selected American oak trees that differed according to the number of growth rings per inch and growing location. Each tree was then cut into two parts – top and bottom – yielding 192 unique tree sections. A single barrel was constructed from each unique section. Prior to construction we varied the stave seasoning times. The 192 barrels were then charred differently. These single oak barrels were then filled with different recipe whiskeys, at various entry proofs and aged in a variety of different warehouse styles.

We believe that this experiment will allow you to directly compare the impact of 7 different critical variables across 192 bottles for a total of 1,396 taste combinations. None of the 192 bottles in the complete set are exactly alike.

Watch for Buffalo Trace Single Oak Project bourbon in stores near you.

Learn more about the Single Oak Project.