Wash tuna very well with cold water.
Now add 1 tabale spoon of soya sause and salt mix well. Let it marinated, set a side for about 30 minutes.
Heat the oil in a large sauce pan lay marinated tuna steak to the sause pan
Fry both side untill tuna steak is light brown. Then set a side.
Then add onion, garlic and ginger in to the sauce pan and fry it for about 7 minutes.
Now add tomato and cook it for about 10 minutes.
Then add fried tuna steaks to the sauce pan.
Cook it for about 10 minutes
Meanwhile add 1 table spoon of soya sauce, peper and salt mix well together well.
Add chopped onion in to the dish as garnish.
Serve with rice.