In ancient Japan, kitchens were an important part of the household. Glass-front cabinets with mirrored backs were not used in ancient Japanese kitchens, as glass was a luxury material and mirrors were not yet invented. Japanese kitchens were typically small and simple, with basic cooking tools and utensils. The Japanese used clay pots and pans for cooking, and their kitchens often had open hearths or clay ovens for baking bread. The walls of the kitchen were usually made of wood or mud bricks, and the floors were made of packed earth or stone. Japanese kitchens were designed to be functional and efficient, with storage spaces for food and cooking equipment. Overall, ancient Japanese kitchens were practical and served the purpose of preparing meals for the family.