Hillrock Double Cask Rye WhiskeyHillrock Double Cask Rye Whiskey Hillrock Double Cask Rye is a unique American whiskey, handcrafted in small batches from rye grain, which has been naturally grown, milled, small batch pot stilled, aged, and bottled by hand on their Hudson Valley Estate. After aging in new #3 char American oak casks, the ward winning Field to Glass whiskey is then aged in #4 char new American oak casks which add layers of caramel and vanilla to complement traditional