👉 "eyen" is a term used in Japanese to describe the taste of an omelette. It's often used as a way to describe the creamy and savory flavor of the omelette, similar to how a person might say they like pizza or other foods that are rich in cheese. The term "eyen" was originally used for the taste of a certain type of omelette, but it has since been used to describe any type of omelette as well.