This is a chawanmushi (savory egg custard) serving bowl, a lidded yunomi (teacup) or steamed bowl. It features a distinctive design with vibrant red, green, and yellow leaf-like patterns and blue swirling motifs. The lid helps to keep the contents warm and prevents dust from entering. My mother purchased it at Mitsukoshi. I looked it up and found the title's description. It has never been used since purchase. I am selling it to organize my belongings. I look forward to your purchase if you understand that this is a long-term stored, used item.