Cabbage and Tuna Rice Bowl

Wash the cabbage thoroughly and shred it.

Slice the onion thinly and chop the green onion.

Heat cooking oil in a pan and stir-fry the onion and green onion.

When the onion is half cooked, add the cabbage and stir-fry.

After draining the oil from the tuna, add it to the pan and stir-fry together.

Season with soy sauce, sugar, and black pepper.

Serve the stir-fried cabbage and tuna over rice.

Sprinkle with seaweed flakes or sesame seeds, if desired.