Maker’s Mark 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).