Luzhou-flavor liquor is recognized as the most fragrant liquor among all liquors. Although there are differences between Sichuan Wuliangye and Jiangsu Yanghe Daqu, the brewing process is the same. The main aroma of liquor comes from ethyl caproate, which is a substance with high aroma content and outstanding aroma.

Compared with other esters, the properties of ethyl caproate are relatively stable and not easy to change, but only below 37℃. If it exceeds this temperature, it will be broken. Moreover, ethyl caproate is flammable and heating is prohibited.

So strictly speaking, Luzhou-flavor liquor should not be exposed to the sun for a long time.