I've had the seared tuna in nice restaurants, but this is better than all of them. One tablespoon of wasabi sounds like a lot of heat, but somehow this cooking method mellows it to almost nothing, just leaves the flavour. Really really great.
I should first admit I had to subsitute a few ingredients - onion instead of shallots, wasabi powder instead of paste and didn't have any coriander. This was a delicious sauce with the tuna, and my husband loved it. Personally, I tasted it before adding in the butter and really enjoyed the clean, fresh taste. Next time I think I would just double the quantities and omit the butter. - 29 Jan 2010
This simple-to-make recipe is guaranteed to bring you compliments- I would give it many more stars if I could. This creamy sauce is worth every bit of exercise you might feel compelled to do-- count your calories elsewhere, and just enjoy this dish! Your tastebuds will thank you! My recommendations: 1) You must use a full-bodied, dry white wine, as the sauce's end result relies on that. I recommend Mersault. 2) You should dedicate 20 minutes to making the sauce. The white wine, vinegar, shallot mixture should take at least that long to reduce, as it should gently boil over medium-high heat. Don't let it boil rapidly, but don't let it just simmer either. 3) Use about half the butter called for, or use all of the butter and let the sauce reduce. Experience has taught me that this sauce is always better when it is thicker and richer. If the recommended amount of butter is used, the result is a thin, mild sauce. By reducing the butter, you'll create a denser, creamier sauce that seems more appropriate for a thick tuna steak. 4) If you take my recommendation for cutting back on the butter, realize that this will reduce the amount of sauce you make to about 3-4 adult portions. 5) Lastly, I recommend serving this with orzo, freshly sliced tomatoes, and deep fried spinach (found on allrecipes.com). The colors, textures, and flavors blend very well. - 21 Apr 2004 (Review from Allrecipes US | Canada)
I liked this recipe so much that I created an account on the site just to write this . I cut an 8oz tuna steak lengthwise for a 4oz serving for my wife and I. After coating each in olive oil and salt/pepper, I seared it on the stove, watching the middle of each half to where I had just the perfect sear:raw ratio. For presentation, I cut each fillet into several thin (about 1/8 inch thick) medallions on the plate, and fanned them out. For the sauce, I haven't been happy with the wine, so I substituted apple juice in for it instead. I still put the white wine vinegar in it, however. Apple juice instead of wine might not sound that great, but when you reduce it down far enough with the vinegar and onions, you get a delious, syrupy base. I only used 1 stick of butter, and I think it was perfect that way. I stuck with the recipe on the 1tbs of soy and wasabi, and was very happy with the result. Even though the "heat" pretty much cooks out, the beauty in this recipe is the taste combination. Be very careful while the butter emulsifies. You want a good thick sauce, but it REALLY wants to boil on you. Watch the heat. This is where cooking with gas helps, because you have that instant temperature control. Once the sauce was done, I drizzled it over the tuna medallions, and served it with rice. Fantastic. - 07 Dec 2007 (Review from Allrecipes US | Canada)