Fresh Bluefin Tuna (Chu-Toro)

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  • Riviera Seafood Club's Fresh Bluefin Tuna (Chu-Toro), scientifically named Thunnus orientalis, is responsibly ranched and harvested using the Ikejime method in the waters surrounding Baja, Mexico. With each bite your taste buds are greeted with a distinct medium-full flavor that shifts from light to rich umami, complemented by a texture ranging from soft to semi-firm with the skin-off and no bones. Bluefin Tuna, called Hon Maguro in Japanese, is prepared as a Saku (block).

    Our Chu-Toro is sushi and sashimi grade with intense fat marbling, resulting in a smooth, buttery taste with melt-in-your-mouth texture that is up to par with top sushi bars. Each of Riviera's Bluefin Tuna begin as a juvenile, wild-caught and are transported to Baja Aqua Farms where they are raised into healthy adults. Every purchase is harvested to order guaranteeing the quality of your tuna. 

    All orders of Fresh Bluefin Tuna are individually packaged and shipped using overnight express delivery. We guarantee our Bluefin Tuna is the best quality that you can find, perfect for sushi, sashimi or a light searing. We highly recommend to eat our Chu-Toro fresh within a one to two day window; freezing will cause color change.

    • Species: Bluefin Tuna
    • Scientific Name: Thunnus orientalis
    • Japanese Name: Hon Maguro
    • Cut: Saku (Block)
    • Flavor: Distinct medium-full flavor ranging from light to rich umami
    • Texture: Ranging from soft to semi-firm; skin-off, no bones
    • Source: Ranched in or near Baja, Mexico
    • Method of Harvest: Ikejime
    • Sustainable: No
    • Responsible: Yes
    • Packaged: Fresh
    • Sushi Grade: Yes
    • Recommended Preparation: Sashimi, Sushi, or Light Searing
  • For a quality seafood experience and maximum freshness, we recommend defrosting and using as soon as possible.

    If the superfrozen fish is not going to be consumed immediately, it can be stored in a conventional freezer for approximately up to 2 weeks before losing quality (change color/oxidation).

    Superfrozen Defrosting Instructions

    1. Method I:  Place superfrozen product in cold water for 15 to 30 minutes, until thawed.  Remove the portion from the plastic, pat dry with a paper towel, cut and enjoy within 24 hours.
    2. Method II:  Remove the portion from the plastic bag, wrap with a paper towel and place in the refrigerator overnight.  Cut and enjoy within 24 hours.


    What is Superfrozen Technology and How Does it Work?

    Conventional Freezing

    We all know that if you put a bottle of water into a freezer the ice EXPANDS, breaking the bottle.  On a cellular level, when fish freezes the ice crystals break through the membrane of the cell, and later when the fish is thawed there’s an accompanying pool of water, and a “spongy” texture to the thawed fish.

    Superfrozen Technology

    Maximum ice expansion occurs at -5°C, but CONTRACTS at lower temperatures.  Superfrozen technology takes advantage of this property, wherein  fish “flash frozen” at -60-70°C (superfrozen) temperatures, pass through the -5°C phase so quickly that ice DOESN’T HAVE TIME TO EXPAND THEN CONTRACT, thus never lysing the cell membrane.  The result is firm, springy texture to the meat, with minimal loss of freshness and nutrients.

    The most dramatic example of this technology is that after being stored at superfrozen temperature for 2 YEARS some pieces of tuna in fact can “curl up” into rigor upon thaw--as they didn’t have time to go into rigor at time of capture or harvest !

  • Arrives in a 1/2, 1, 2 or 4 pound fresh portion, wrapped in food-grade absorbent paper, then in an individualized loin bag. Fresh, (not frozen) Tuna can be stored in the refrigerator for sashimi use immediately upon arrival. For raw consumption, eat within 1-2 days. Any longer, the portion will be searing, poke, or cooking grade. You can also freeze these portions immediately upon arrival and store for up to one week for sashimi use or 10 days for poke, searing, and cooking preparations (keep in mind that freezing sashimi grade fish does slowly diminish the quality of the meat as the cell membrane is not well maintained in conventional home freezers). Rule of thumb-- eat it while it's fresh!

Customer Reviews

Based on 43 reviews
Garrett N.
AMAZING Bluefin Tuna!!

This was my first time ever trying bluefin tuna. I decided to give Riviera a try because they had the best prices by far compared to everyone else. So reasonable I thought there would be a catch. My shipment arrived right on time and needless to say I was amazed with what I received. It was packaged professionally and the bluefin was incredible. It had no fishy smell, and the meat was so tender and fatty that it literally was melting in my hand. Upon putting slices on sushi rice, I swear this stuff melts in your mouth. You literally do not have to chew it. I gave it to friends and family, some of whom do not eat or like raw fish. Everyone LOVED it. Their eyes opened so wide when they took their first bite, made me so happy! I was honestly hesitant to order raw fish online, but after this experience, I will be ordering from them again. I have referred friends and family and I know you will to after trying this!

Matt Dreher

I wouldn’t say I’m very cultured, but this is absolutely the best tuna I’ve ever had. Great quality, shipping was excellent, I enjoyed this very much.

Superb Quality

Outstanding quality with great price. Perfect for sashimi at home. This Chu-toro has been one of my regularly ordered items.

Rickey Williams

So fresh, such high quality! Some of the best seafood I've ever had!

Wissam Alame
Fantastic Quality

I loved the quality of this bluefin Chu-Toro! I made a feast of nigiri and sashimi, and the Chu-Toro was unanimously the favourite.

Outstanding quality and freshness — couldn’t have asked for better!