Japanese Tamago Egg
Tamago egg is classic Japanese folded omelet sometimes called tamagoyaki. The omelet is sweet, has a light texture, and works well when served over sushi rice and with soy and wasabi sauce for dipping. Tamago is the Japanese word for egg. Mirin is sweet rice wine and dashi is traditional Japanese soup stock (make from kelp or shiitake). These ingredients are now carried in most larger grocery stores or at Asian markets.
It is best to use a Tamago pan, which is a 5x7-inch square nonstick frying pan, but any small pan will work--you just won't have square ends on your finished omelet-- but no effect on taste.