Maker's Mark Cask Strength Bourbon WhiskyBottled at 108 to 114 proof, Makers Mark Cask Strength amps up the front of the palate flavors of Makers Mark. In other words, its Makers with a lot more Makers. But the higher alcohol content of our Cask Strength isnt the story here its the taste. Makers Mark Cask Strength has more of the rich oak, vanilla, caramel and spice that are the signature flavors of Makers Mark. Bottle size: 750ml