Hillrock Single Malt Whiskey - Hillrock Single Malt Whiskey will let you experience the change of seasons. Hillrock Single Malt Whiskey is made by Master Distiller David Pickerell, and earned a score of 95 points from the Beverage Testing Institute. Hillrock Single Malt is handcrafted in small batches from naturally grown Hillrock estate barley, which has been traditionally floor malted on-site in the first new malthouse built at a USA distillery since Prohibition.