The traditional Japanese home was centred around the irori, an open stone-lined fire pit and the heart of the home, a focal point around which the family would gather for warmth, comfort and to cook daily meals. They would typically use wood from fallen trees, or more affluent households would use charcoal; the latter is important for the evolution of the robata, as it was smoke-free and would burn for longer than wood. The food grilled would be seasonal and local, a traditional menu with lots of fish, tofu and vegetable options.