1.Wash the fillet and trim away skin and bones.
2.Cut into one inch cubes.
3.In a glass bowl, place the cubed tuna.
4.Season with salt and pepper. Mix well.
5.Pour in the vinegar to cover the tuna well.
6.Cover loosely and refrigerate for an hour.
7.Drain the fish of the excess vinegar.
8.Add the lemon juice, chili peppers, bell pepper, ginger and onion.
9.Mix well and chill for another 20 minutes.
10.Add salt and vinegar to taste again. Mix well.
When eating kinilaw, remember to eat each piece of fish with a few pieces of onions as well. It makes the experience of eating kinilaw really memorable.