土器 (doki) refers to earthenware pottery that was commonly used in ancient cultures, particularly in Japan. Made from clay, these vessels were shaped and then fired in a kiln to harden them. 土器 served various purposes, including cooking, storage, and ceremonial uses, reflecting the daily life and practices of the people who created them. The development of 土器 marked a significant advancement in human technology and culture. It allowed for better food preservation and preparation, contributing to the growth of settled communities. Archaeological findings of 土器 provide valuable insights into the lifestyles, diets, and artistic expressions of ancient societies, such as the Jomon culture in Japan.