Japanese rolled omelet is called tamagoyaki or dashimaki. It's also known as a Japanese-style egg roll. Tamagoyaki is often served for Japanese-style breakfast. Also, it's one of the most popular dishes in Japanese bento lunch boxes.
There are many types of tamagoyaki. Some are sweet and some are salty. Also, you can add fillings in tamagoyaki to make it colorful.
Tamagoyaki is usually cooked in a rectangular omelet pan. Rectangular omelet pans are commonly sold in Japan, but it might not be a common cookware in other countries. It's OK to use a regular frying pan if a rectangular omelet pan is not available. In that case, shape rolled omelet into a rectangle, using a bamboo mat. When you add sugar in tamagoyaki, it tends to get burned easily. Watch the heat carefully.
