Sake is a very fragile wine. As long as it is exposed to the sun for a few hours, its quality will change rapidly and may even change color. In addition, when the quality deteriorates, it will emit peculiar smell. However, it must be noted that natural light is not the only cause of these phenomena. Even artificial fascination such as fluorescent lamps may have an impact.
black liquor bottle, the dark color bottles such as liquor bottle, tawny liquor bottle and green liquor bottle are mostly used for sake, because after analyzing the light transmission ratio of the glass bottles, it is found that these dark color bottles are less likely to be penetrated by ultraviolet rays than the transparent ones. In terms of shading effect, black liquor bottle is the best, followed by brown and green.
