The Guinomi is a type of sake cup, typically larger and deeper than other styles, believed to have evolved from small Mukōzuke bowls used for side dishes during Kaiseki: the light, multi-course meal that precedes formal Chaji tea ceremonies, where thick Koicha tea is served. The meal, accompanied by sake, lines the stomach and cleanses the palate before the potent brew is drunk. Besides its calming properties, the ritual of sharing sake amongst host and guests fosters deeper connections and respect, contributing to the sense of harmony and tranquility central to the tea ceremony.