Shred the cabbage and finely chop the green onion and garlic.
Heat cooking oil in a pan and sauté the green onion and garlic to bring out their aroma.
Drain the oil from the tuna can and add the tuna to the pan, stir-frying together.
Add the cabbage and stir-fry.
Add the rice, then season with soy sauce, salt, and pepper.
Stir-fry everything well until combined, then serve on a plate.