Peel the onion, cut into thin slices, and soak in water.
After letting it soak, thoroughly drain the water and any excess moisture.
Drain the oil from the canned tuna and combine the tuna with the onion.
Combine the A ingredients. Add to the onion and tuna for flavor.
Arrange on a dish. Top with finely chopped green onion to finish!
Story Behind this Recipe
I came up with this dish during my studies to become a junior vegetable sommelier.
This salad can get watery after some time, so try not to let it sit for too long. To prevent it from becoming watery, the main point is to thoroughly and completely drain and squeeze out all the water!