Remove excess moisture from the tofu and cut it into bite-sized pieces.
Drain the oil from the tuna using a strainer.
Finely chop the green onions.
Heat cooking oil in a pan and sauté the green onions to make scallion oil.
Add the tofu and cook until golden brown.
Add the tuna and stir-fry together.
Season with soy sauce and black pepper.
When all ingredients are well mixed, it's ready to serve.