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Bag of frozen Kirkland Signature Chilean Sea Bass from Costco
Cooked plate of Kirkland Signature Chilean Sea Bass from Costco

Last time we went to Costco we saw one of our favorite types of fish: Chilean Sea Bass! The Kirkland Signature Wild Caught Chilean Sea Bass was frozen and ~1.5 lb for $40. When we get Chilean Sea Bass, we usually buy it at another store that sells it for $36 a pound, so this seemed like a fairly good deal.

The frozen Chilean Sea Bass came in individually wrapped and sealed portions, which was very convenient. There were five frozen portions in the bag, and we ended up cooking three of them following the cooking directions on the bag loosely.

Kirkland Signature Chilean Sea Bass from Costco sealed portions
Individually sealed portions

The Chilean Sea Bass turned out nice, buttery, and flaky -- delicious! It wasn't dry or rubbery at all. We are very happy that Costco is now carrying these, as they make for a quick, easy, and delicious meal.

Below are instructions on how we cooked it.

How We Cooked the frozen Chilean Sea Bass (on a tray on a gas grill):

1. Thaw it.

  • The "regular" thawing instructions recommend thawing the portions unwrapped for 8-10 hours in the refrigerator, and the "quick thaw" instructions suggest thawing them in their packaging under cool water for 15-30 minutes, replacing the water every 5 minutes. We had about 4 hours before we were going to cook the Chilean Sea Bass and had forgotten to thaw the portions, so we tried a combination of the regular thaw and quick thaw instructions on the back of the bag.
  • We ended up thawing the three portions inside their packaging under cool water for 5 minutes one time. Then we unwrapped them and put them on a plate in the refrigerator for the remaining 4 hours. The biggest piece was still a little frozen, but the other smaller pieces we had were almost thawed all the way, so we just went ahead and cooked them.
  • 2. Spray a foil tray with Pam, and place the three portions of Chilean Sea Bass on it.

    3. Add a sliver of butter on top of each piece (or whatever seasoning you want).

    4. Turn all three burners on the gas grill to High with the lid closed for 15 minutes. After the 15 minutes, turn the middle burner to Low.

    5. Put the tray of fish on the middle burner, and flip each piece of fish approximately every 3 minutes. We ended up flipping each piece ~4 times and cooked them for a total of about 12 minutes.

  • Note: The instructions on the bag state to cook them for 5 - 7 minutes and flip them once. We probably had to cook them longer because ours weren't thawed all the way.
  • 6. Take it off the grill and serve!

    Overall Rating:
    Delicious
    Food: Frozen Kirkland Signature Wild Caught Chilean Sea Bass
    Price: $39.99 for 1.5 lb bag (5 portions)
    Source: Costco, Tucson, AZ
    Rating: Delicious

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    1 Comment

    REVIEW – Kirkland Signature: Chilean Sea Bass from Costco (Frozen)

    • Max C

      We bought this a few days ago at Costco in Florida. The package clearly states that it was wild caught in France. So whatever it is, it’s not Chilean Sea Bass.
      But I must admit it did taste excellent!

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