Chop the cabbage finely.
Drain the oil from the tuna and prepare it.
Prepare a bowl of rice.
Heat cooking oil in a pan and stir-fry the cabbage.
Once the cabbage is cooked, add the tuna and stir-fry together.
Add the rice and mix well with the ingredients.
Season with soy sauce and salt to taste.
Turn off the heat and serve in a bowl.