Cut the green onion into small pieces.

Pat the fried tofu with a paper towel to remove excess oil. Make a cut inside and scoop out the inner part with a spoon. Chop the scooped-out part and coat the tofu with potato starch.

Cut open the mentaiko and extract the contents. Mix the mentaiko with mayonnaise in a bowl to make mentaiko mayo.

In a bowl, soak breadcrumbs in milk, then add the remaining meat filling ingredients along with the chopped tofu. Mix until sticky and divide into two portions.

Stuff the fried tofu with the meat filling.

Heat salad oil in a frying pan. Place the tofu with the meat side down and cook until browned. Flip and cover with a lid. Steam on low heat for 5–7 minutes until the meat is cooked through.

Top the tofu with mentaiko mayo and pizza cheese. Cover with a lid and steam until the cheese melts.