Seared Fresh Yellowfin Tuna
Mirin, Sesame Oil, Tamari, Key Lime Juice
Avocado Pineapple Mash with Serrano
Steamed Jasmine Rice
Avocado, crushed pineapple, finely chopped serrano chiles, a squeeze of key lime juice and a pinch of Kosher salt are mashed together with a fork. Avocado and pineapple make an interesting flavor combination, perfect complement to the fish.
Whisk together equal parts mirin, sesame oil, and tamari, plus half as much key lime juice. Divide in half, one part for serving the other part for seasoning the tuna.

The sashimi grade tuna is coated with the sauce just prior to cooking. It is not left to marinate for more than a few minutes per side, as with fish this fresh, I did not want to mask the delicate complex flavors of the fish.
I used that great SCANPAN ceramic titanium non-stick fry pan from Denmark here! Heat the dry pan until very hot and add the tuna. Sear over high heat about 60 seconds per side. Serve the yellowfin tuna over the sauce with a scoop of avocado pineapple mash, steamed jasmine rice on the side. We thoroughly enjoyed this meal with a White Bordeaux, although a lighter style Burgundy/Pinot Noir would have been a good choice as well. For a terrific recipe using a similar sauce with king salmon, please visit here.
FRESH FISH ALERT !!!
Imagine my excitement when I walked into my neighborhood butcher shop to see Darko filleting his Yellowfin Tuna! Intentions to get anything other than yellowfin tuna went out the window! I was so glad to have my camera on hand too.

South Shores Meat Shop
Western Avenue at 25th Street
San Pedro, California
Tuna Facts: There are two species of tuna known as ahi, yellowfin and bigeye. Tunas are the fastest fish in the world; in fact, bursts of speed exceeding 20-30 mph are not unusual. They have streamlined bodies specifically adapted for efficient swimming, large white muscle masses useful for swimming long distances, and red muscle masses for short bursts of speed when chasing prey or escaping predators. For more interesting information on yellowfin tuna, nutrition, and sustainability status you can visit FishWatch.
Love tuna for sushi, and your tuna sounds so delicious.
Cheers,
Elra
What beautiful fresh tuna. That avocado and pineapple mash sounds really interesting.
Wow, that looks wonderful!
This looks great, I love anything that involves avocado – the pineapple is a great twist!
LL,
Those fins are beautiful!
How nice to get such a fresh catch.
Tuna season is a long way away in NJ. And I can’t even think of eating a beloved avocado in the winter. That is my summer addiction! Wishful thinking!
An elegant dinner!
That presentation looks gorgeous!!
(and yum yum too)
okay you are so in the know with your local butcher ~ can’t get any fresher than that unless you’re out on the boat yourself! i have a weakness for yellowfin tuna + u made the perfect marinade for it….sounds similar to *ponzu* + lov the combine with the avocado!
We eat fresh yellow fin often…I have never tried pineapple and avo before, but will definitely next time…great flavors here, Lori!
LOVE tuna… that looks delicious!
never expected avocado/pineapple combination could matched so well.
Oh my! I am so salivating over the freshness of that tuna! You’re fortunate you know the source. 🙂
that’s one great meal you have… 🙂
I can’t wait to try that avocado pineapple mash
That’s one beautiful tuna! Oh how I miss fresh fish markets. 🙂 The avocado and pineapple sound great together Lori Lynn! A very complimentary duo!
High detailed photography. Very harmonious flavors tickling the Palette
Wow – the tuna looks amazing.
That's a he-man sized tuna steak and love the smile & pride that Darko takes.
another beauty of a meal! Love the fishmongers photo – OK the butchers. Hey, I know who Darko is! I know where the butcher shop is. that’s so fun.
I´m getting hungry looking at the pics.
Tuna is my favorite fish! I haven’t had it in awhile…this looks so good!
You are lucky. Just beautiful. I have to try this avocado pineapple mash. The flavors sound amazing.
Hi Lori Lynn! i knew if i came here i would get inspired! I think i need to take a trip down to the fish market in Santa Barbara this weekend…
love, lori
What a great butcher shop you have there LL, fresh tuna is amazing! I absolutely want to try that pineapple avacado mash! Another brilliant concoction from you!!
Thanks for the information. I enjoy your blog!