Long-term research on liquor shows that only a few kinds of maotai-flavor liquor, such as maotai liquor and seven kinds of weapons liquor, have patents that "the older they are, the more fragrant they are". The reason why Maotai-flavor liquor can really get older and older is, in the final analysis, because Maotai-flavor liquor is brewed from pure grain without adding any impurities, which is an important quality attribute that distinguishes Maotai-flavor liquor from other fragrant liquors. The brewing technology of Maotai-flavor liquor is unique, which is completely different from other flavor liquors.
For example, the traditional brewing process of maotai-flavor liquor used in seven kinds of weapon liquors, such as Dragon Boat Festival and Chongyang feeding, takes one year to produce, and after more than three years of aging, plus the time for raw materials to enter the factory, blend and store, the average aging time of liquor can reach at least five years. Even after aging and storage, the chemical and physical changes such as oxidation, reduction and lipidation of liquor itself effectively discharge low-boiling impurities in liquor, condense acetaldehyde and reduce the irritation of liquor. With the extension of storage time, the natural contact between water molecules and wine molecules increased.
The traditional production technology of Maotai-flavor liquor shows the charm that contemporary science and technology can't emulate, which makes the Maotai-flavor more fragrant as it gets older, and it won't be weakened by chemical components that increase aroma and volatility like other liquors. This is also the reason why seven high-end maotai-flavor wines and other brands strictly follow the ancient method of brewing.