Prepare 1 liter of broth and bring it to a boil.

Beat the eggs in a bowl until smooth.

Peel the potato and cut it into bite-sized pieces. Slice the green onion diagonally.

Rinse the potato pieces and add them to the boiling broth. Cook until the potatoes are tender.

Add 1 tbsp of tuna sauce to the broth and adjust seasoning with salt to taste.

Pour the beaten eggs gently into the soup in a circular motion.

Add the sliced green onion and let the soup simmer briefly.