Sake with gold clovers make us smile during Golden week. Sake with gold flakes added is called Kinpaku-iri. The additions of these gold flakes to a bottle of sake does not make the sake any better. However, as gold will not chemically react with the sake, it does not adversely affect the product either. In short, the gold is added simply to make the product more of luxury item, to add a sense of extravagance.