Steps

1. Cut 1 Onion in half lengthwise.
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2. Grate some of the halved onion. This will be used for the dressing.
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3. Thinly slice the remaining onion against the grain. Key Tip! Slicing against the grain makes the onion less spicy and easier to eat, creating a delicious onion salad.
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4. Soak the thinly sliced onion in a vinegar-water solution with a small amount of water and vinegar to remove spiciness. Key Tip! Soaking in vinegar-water helps to remove the spiciness more quickly.
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5. Place the grated onion in a heatproof container and microwave without covering. Key Tip! Microwaving removes spiciness and enhances sweetness.
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6. Without letting the microwaved grated onion cool down, transfer it to a bowl, add 1 tbsp Mayonnaise and 1/2 tbsp Sugar, and mix well.
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7. Continue by adding 2 tbsp Soy Sauce, 1 to 1.5 tbsp Vinegar, and 1 tbsp Sesame Oil, and mix until the dressing is smooth. Key Tip! Making a larger batch of dressing is convenient as it can be used for other dishes.
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8. Lightly rinse the onion that was soaked in vinegar-water under running water and drain in a colander.
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9. Rub the onion under running water to remove spiciness, and drain thoroughly. Key Tip! Be careful not to over-soak the onion in vinegar-water, as this can diminish its flavor and make it watery.
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10. Further pat dry the drained onion with paper towels.
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11. Arrange the drained onion on a plate.
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12. Add 1/2 small can Tuna on top of the arranged onion.
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13. Lightly mix the onion and tuna on the plate.
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14. Drizzle your desired amount of the prepared dressing over the top.
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15. Finish by generously sprinkling Coarse Black Pepper. Key Tip! Adding chopped herbs like green onions or perilla leaves to your preference will make it even more fragrant.
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