Grate the yam

• Peel the nagaimo and grate it finely into a mixing bowl.

Make the batter

• Add the egg, soy sauce and mirin to the grated yam.
• Mix until smooth and slightly fluffy.

Fry the pancake

• Heat the oil in a frying pan over high heat.
• Pour in the batter and spread it into a round pancake.
• Cook until the edges are set and slightly crispy.

Add the cheese and finish

• Scatter the cheese over the pancake.
• Cover and cook until the cheese melts and the base is golden.

Serve

• Slide the pancake onto a plate and serve hot.