This article explores the history and popularity of boiled eggs in Japanese cuisine, including different types of boiled eggs consumed in Japan, their health benefits for Japanese people, how to prepare and cook them, and commonly used ingredients with boiled eggs. Boiled eggs have been eaten as part of religious ceremonies and festivals since the 8th century CE. They are often served at breakfast or lunchtime with rice and other dishes such as miso soup or natto. There are several methods used when preparing various types of boiled eggs such as Tamago-kake-gohan, Onsen tamago, Mizutaki, Shirayaki tamago, & Chawanmushi. Eating boiled eggs can offer numerous health benefits due to its high protein content which helps build muscle mass and maintain energy levels throughout the day. Common ingredients used alongside them include soy sauce, mirin, dashi broth, sake, salt, vegetables & seaweed.