Master’s Keep is Wild Turkey’s oldest release to date at 17 years. The bourbon is released at barrel strength, meaning it has not been watered down after being dumped from the barrels it was aged in. It’s abnormally low proof of 89 out of the barrel (some additional proof was lost during filtration bringing the bottling proof down to 86.8) is a result of unique storage conditions whereby it was generally aged in a cooler and more damp environment than many other bourbons. Wild Turkey attributes this to a unique, though accidental aging process. The company ran out of rickhouse space and was forced to age the barrels that would eventually become Master’s Keep in brick rickhouses at the Old Crow Distillery, which were located in a low lying valley. Barrels were then moved a number of times and eventually made their way back to the wood and metal rickhouses at the Wild Turkey Distillery. The particular bottle in review is marked Batch No: 0001, Bottle No: 62402, No 1 wood, No 2 stone, No 3 wood.