Rabbit Hole Boxergrail Sour Mash Rye Whiskey is a product of Rabbit Hole Distillery, known for its innovative approach to whiskey-making. The “Boxergrail” variant is likely a play on the word “Bourbon” and “grail,” suggesting it’s a special or coveted expression.

Sour Mash Rye Whiskey typically refers to a style of whiskey that incorporates a sour mash process, where a portion of previously fermented mash is added to the new mash to help control pH levels and maintain consistency. Rye whiskey, on the other hand, is distilled primarily from rye grain, giving it a spicier and more assertive flavor compared to bourbon.