Traditional barrel aging works because of what happens at the interface between the spirit and the wood: the liquid extracts compounds from the wood, oxidizes slowly over time, and develops the esters, aldehydes, and lactones that define a mature spirit's character. The barrel is the environment for those reactions. The time is a constraint, not a feature.
Inverse Barreling drives the same reactions without the barrel and without the years. By controlling the conditions that govern those chemical changes, the process produces the same molecular profile in a fraction of the time.
The result is not a flavour imitation designed merely to taste like aged bourbon. It is a matured spirit containing the same key volatile compounds found in conventionally aged reference products, as confirmed through gas chromatography.
Bourbon is a protected designation with specific origin and production requirements, including maturation in new charred oak barrels. Inverse Barreling produces a corn-based spirit through a different process, which is why ...this is not a bourbon.