Maker’s 46 Cask Strength is the barrel proof version of the standard Maker’s 46. Maker’s 46 starts off as standard Maker’s Mark, which is a wheated bourbon made in batches of less than 1,000 gallons. Then heavily seared French oak staves are placed in just-emptied standard Maker's Mark barrels, which are then refilled and returned to the warehouses to finish aging for an undisclosed amount of time (estimated to be 2-3 additional months). The Maker’s 46 Cask Strength version comes in between 108-114 proof. The bottle being reviewed is proofed at 109.6. Currently, this is only sold in the Maker’s Mark distillery gift shop in 375 ml bottles.