Cut the cod roe and extract the contents.

Crack the eggs into a bowl and mix well.

In a pot, combine the seasoning ingredients and heat until boiling. Reduce to medium heat and add the potato starch mixture to thicken.

Pour the beaten eggs into the pot and gently stir with chopsticks. Turn off the heat and let cool. Refrigerate for 30 minutes.

Boil water in a pot, cook the somen noodles according to package instructions, then rinse with cold water and drain.