Elijah Craig Barrel Proof 12 Year Bourbon releases are bottled without any dilution or chill filtering. The batch numbers provide specific information about the release: The first letter indicates which of that year's releases the bottle was a part of starting with "A", while the second digit is a number that determines the month of the year the bottle was released. The third and fourth digits indicate the year. Batch B520 is bottled at 127.2 proof.
