Seared Tuna with Onion Sauce

Seared Tuna with Onion Sauce

With just one small twist, even cheap, not very good sashimi type tuna can be quickly changed into a dish suitable for serving to guests. Great to enjoy with drinks as well.


Tuna block
☆Japanese leek
10 cm
1 clove
the same amount as the garlic
●Soy sauce
1 tablespoon
●Sesame oil
1 tablespoon
1 tablespoon
1 tablespoon
●Cooking sake
1 tablespoon
●Chicken stock granules
1 teaspoon
●White sesame seeds
1 tablespoon
Onion, sliced
1/2 medium
Radish sprouts
1/4 pack
Salt and pepper
to taste
Vegetable oil
as needed


1. Wipe off the excess moisture from both sides of the tuna block. Lightly season with salt and pepper (both sides.)
2. Mince the leek, garlic, and ginger and set aside. Combine the ● ingredients.
3. Thinly slice the onion. If it's spicy, soak in water. Lightly rinse the radish sprouts and then cut into 2 cm pieces.
4. Heat vegetable oil in the frying pan and cook the ☆ ingredients, being careful not to burn them, until fragrant.
5. Once fragrant, add the combined ● ingredients. Bring to a boil and then turn off the heat. This completes the onion sauce.
6. Next, heat some vegetable oil in a separate frying pan and pan-fry the tuna block until both sides are lightly browned.
7. Once done, slice into your preferred sizes.
8. Arrange the sliced onion on a plate and place the tuna from Step 7 on top. Scatter with lots of radish sprouts and then pour on lots of onion sauce from Step 5 to finish.
9. Since I didn't have any radish sprouts on this occasion, I used mizuna leaves.

Story Behind this Recipe

The garlic & butter fried sea bream that I had at a sushi restaurant was so impressive! It was a mix of Japanese style with a touch of Western style, so using that idea, I used a tuna block and turned it into something other than the normal sashimi, adding a touch of Western style, and it came out really delicious.