What is 'ajitama' and how is it prepared?

Ajitama, or 'seasoned egg,' is a classic ramen topping that is a favorite of many ramen lovers. It's a soft-boiled egg that has been marinated in a mixture of soy sauce, mirin, and sake. The marinade gives the egg a deep, savory flavor and a beautiful brown color. The yolk of an ajitama should be soft and jammy, providing a creamy and rich contrast to the other elements of the ramen.