Break the eggs in a bowl and add the mirin and soy sauce. Season with salt, pepper powder, and sugar. Beat the eggs using a fork or a pair of chopsticks.
Description - Step 2
Cook the First Layer
Brush a non-stick pan with oil. You can dab oil with a kitchen towel too. Add one layer of the egg mixture and cook on a low-medium flame, till the top is 90% cooked. Roll this layer from one side till the complete end, and push it to the end of the pan.
Description - Step 3
Cook the Next Layers
Pour some more egg mixture on the pan to make the second layer of the omelette. Cook this layer till it is 90% done. Then, roll the first layer of the omelette over the second layer, and you will have a small egg roll.
Repeat the process of adding some egg mixture, cooking till 90%, and then rolling it with the prepared egg roll. When it is done, you will have a single large egg roll.
Description - Step 4
Assembling the Tamagoyaki
Put the egg roll on a plate. Cut a thin layer from each side of the roll to get an even, rectangular- shaped egg roll. Cut the egg rolls into slices of approximately 1 inch thickness. Once the rolls are cut, the different layers of fried egg are clearly visible. The Tamagoyaki is prepared, you can garnish and serve.