Nihonshu, commonly known as Japanese sake, is a traditional alcoholic beverage made from fermented rice. The brewing process involves polishing the rice to remove the outer layers, which helps create a cleaner flavor. Water, yeast, and koji mold are also essential ingredients, contributing to the unique taste and aroma of nihonshu. Nihonshu is typically enjoyed chilled, at room temperature, or warmed, depending on the type and personal preference. It is often served in small ceramic cups called ochoko and is a popular drink during celebrations and ceremonies in Japan.