Miso and Soy Chilean Sea Bass Recipe
Ingredients
- cup sake
- cup mirin (Japanese sweet rice wine)
- cup miso paste
- cup packed brown sugar
- 3 tablespoons soy sauce
- 4 (4 ounce) fillets fresh sea bass, about 1 inch thick
- 2 tablespoons chopped green onion
Directions
- In a bowl, whisk together the sake, mirin, miso paste, brown sugar, and soy sauce until fully combined.
- Place the sea bass fillets in a large resealable plastic bag. Pour the prepared marinade over the fillets, ensuring they are evenly coated. Seal the bag and refrigerate for 3 to 6 hours.
- Preheat your ovens broiler. Position the oven rack about 6 inches from the heat source. Leave the oven door slightly ajar to allow proper ventilation during broiling.
- Arrange the marinated sea bass fillets on a baking sheet, discarding the marinade. Place the baking sheet in the preheated broiler.
- Broil the sea bass fillets for 7 to 9 minutes or until the fish flakes easily with a fork.
- Remove from the oven and sprinkle the fillets with chopped green onions before serving.
Cooks Note
This dish pairs wonderfully with a side of bok choy and sticky rice for a complete meal.
Nutrition Facts (per serving)
- Calories: 287
- Total Fat: 4g (5% Daily Value)
- Saturated Fat: 1g (4% Daily Value)
- Cholesterol: 47mg (16% Daily Value)
- Sodium: 1613mg (70% Daily Value)
- Total Carbohydrate: 28g (10% Daily Value)
- Dietary Fiber: 1g (5% Daily Value)
- Total Sugars: 22g
- Protein: 25g (49% Daily Value)
- Vitamin C: 1mg (1% Daily Value)
- Calcium: 42mg (3% Daily Value)
- Iron: 1mg (7% Daily Value)
- Potassium: 393mg (8% Daily Value)

Author: Swest
This delectable recipe combines the rich flavors of miso paste, soy sauce, and mirin to create a savory marinade for the delicate and buttery Chilean Sea Bass. The fish is broiled to perfection, allowing it to flake easily and absorb all the umami from the marinade. This dish is an excellent choice for a memorable dinner or special occasion.
Origin and History
The Chilean Sea Bass, also known as Patagonian Toothfish, is native to the cold waters around the Southern Ocean, including the seas off the coast of Chile. Despite its name, the fish is not a true bass, but rather a member of the Notothenidae family. The use of miso and soy in marinades has deep roots in Japanese cuisine, dating back to ancient times. These ingredients bring out the natural sweetness and umami flavors, making them perfect for enhancing the mild taste of sea bass. This particular combination of miso, soy, and mirin is a classic in many Asian cuisines, particularly in Japan where fish and soy-based sauces are a staple of their culinary traditions.
Regional Features
This recipe is heavily inspired by Japanese flavors, particularly from the popular dish, Miso-glazed Black Cod, which is often served in high-end sushi restaurants such as Nobu. The use of miso paste, mirin, and soy sauce is a hallmark of Japanese cooking, reflecting the country's deep appreciation for fermented ingredients and fish. While Chilean Sea Bass is not native to Japan, the adaptation of this fish into a Japanese-inspired marinade showcases the global fusion of culinary traditions. Chilean Sea Bass is prized for its rich texture and mild flavor, making it an ideal candidate for miso-based marinades.
What Sets It Apart
Unlike many other fish dishes, the Miso and Soy Chilean Sea Bass stands out because of its marinade, which not only flavors the fish but also helps to tenderize it. The balance of sweet, salty, and umami-rich ingredients in the marinade creates a complex flavor profile that enhances the fish's natural taste. The miso paste and soy sauce give the fish a deep, savory layer, while the mirin adds a subtle sweetness that contrasts beautifully with the saltiness. This dish also differs from other similar recipes, such as miso-glazed salmon, by using a firmer, more delicate fish that can handle the rich marinade without overpowering its texture.
Where Its Usually Served
The Miso and Soy Chilean Sea Bass is commonly served in high-end Asian restaurants, particularly those offering fusion cuisine. It is especially popular in Japanese-inspired eateries, where it is often featured as part of a tasting menu or a luxurious main course. This dish can also be enjoyed at home as a special treat for family and friends. Typically, it is paired with side dishes such as steamed rice, sauted bok choy, or sauted vegetables to complement the richness of the fish. The simple yet elegant presentation makes it a dish often reserved for fine dining, but it can be easily recreated in a home kitchen.
Fun Facts
- Chilean Sea Bass was once marketed under the name "Toothfish" but was rebranded for its more appealing name due to its popularity in fine dining.
- Chilean Sea Bass is considered a sustainable seafood choice when sourced from certified fisheries. However, overfishing has been a concern in the past, so it is important to buy from reputable sources.
- Miso has been a part of Japanese cuisine for over a thousand years. It is made by fermenting soybeans with salt and a special mold called "Koji." This fermentation process gives miso its characteristic umami flavor.
- Mirin, a sweet rice wine, is often used in Japanese cooking not only to add sweetness but also to give a beautiful glaze to meats and fish.
- This dish is known for its melt-in-your-mouth texture, with the sea bass becoming incredibly tender when broiled, which makes it a crowd-pleaser even for those who arent typically fond of fish.
In conclusion, Miso and Soy Chilean Sea Bass is a perfect example of how traditional Asian ingredients can be used to elevate the flavor of a simple, high-quality fish. With its roots in Japanese culinary traditions and its adaptability to different palates, this dish is both a gourmet delight and an easy recipe for a luxurious meal at home.
FAQ about Miso and Soy Chilean Sea Bass Recipe
Comments
CookingMaMa08
10/06/2025 01:52:54 PM
UPATE 2: I tried this recipe on wild cod filets and it is by far the BEST choice of fish. If you don't get to marinade it for 3 hrs, it's OK. Just save the marinade and cook it into a sauce aferwards. I now like to place it on the top rack of the oven and broil it for 10-12 minutes or until it's done. This method is better than baking which also takes a longer time. But you will need to make sure it doesn't burn. This recipe has become one of my favorite!!! UPDATE 1: I used this recipe again on halibut filet. It was just as tasty. I got to marinade the fish for 4 hours, but still kept the marinade and cooked it into a sauce. And the sauce made a difference. Cook time for the halibut was also around 20-25 minutes baked at 400 degree. ------- EXCELLENT marinate!!! I had a grilled fish dish at a Japanese restaurant last week and this marinade tastes just like it! My hubby who hates cooked fish enjoyed this too. We got frozen sea bass, so it might taste a bit fishy, this marinade really helps to reduce the fishy taste. The reason why I gave this a 4-stars is the sea bass isn't fully cooked at 400 degree for 7-9 minutes. It really took me 20 something minutes with baking instead of broiled and checked it by poking a fork through. I didn't have time to marinate it for 3-6 hrs, so I only marinaded it for an hour and cooked the marinaded for dipping. It was really good.
SD8888
01/20/2024 03:51:35 AM
Very delicious! I followed the recipe exactly and marinated for 6 hours. Definitely good suggestions to save the marinade, cook it down and drizzle on top. I had some thick pieces, so cook time ended up being about 25 minutes. Doing this again tomorrow with guests coming over. Plan to sous vide for an hour at 135F after marinating, then finish in oven on broil until there’s a nice brown char on top. I’ll need to marinate over night this time, hope that’s not too long! EDIT: Removed from marinade and vacuum sealed after 11 hours. Put in fridge. Saved marinade. Played golf. Sous vide for 1 hour at 135F. Removed from bag, put on baking pan. Broiled for about 2 minutes, about 6 inches from heat, until brown. Heated saved marinade, put 2 tablespoons on top of each piece. Very very delicious!
RMKAPP
06/15/2021 01:27:01 AM
DELICIOUS!!! My family has been missing the miso glazed sea bass the Yardhouse used to have on the menu. Now, I can just make it at home. This dish is as beautiful as it is delicious & very easy to make. The only thing I did different (I know, I usually hate it when people do that) is that I made double the marinade. I used half to marinade the fish & heated the other half as a sauce for the rice & baby bok choy that I served with it.
Quincy
04/10/2020 12:31:43 AM
Delicious and easy! If you’re like me you didn’t have time (or forgot!) to marinate for 3-6 hours. So instead I saved the marinade and heated it in a sauce pan until boiled. Serve the fish over rice with the leftover sauce. If you don’t want to shell out the extra bucks for sea bass, tilapia or any white fish will do. Love it!
Lisa Wilkerson
09/11/2024 01:04:18 AM
Whoa!!! I was not prepared for how absolutely fantastic this recipe was going to turn out!!! Literally amazing as written. I did not change one thing at all, just marinated my sea bass overnight because I like flavorful food. It was phenomenal. Tasted just like the miso flavor of the Miso Salmon I order at Cheesecake Factory, which happens to be my favorite. I cooked the sea bass on medium heat on top of the stove covered for about 10 mins constantly spooning some of the extra sauce over it and when it was pretty much done, I put the fish inside of the oven on broil for about 6 minutes to give it a nice crispy crust. I made white rice and Brussel sprouts to pair with it . Wonderful. I made extra marinade and have salmon in the fridge marinading in it at the moment. Going to try it tmrw and see how it turns out. Excited!
FlashyMelt7084
07/30/2023 10:01:16 PM
To make sure you keep the delicious flavor of the marinade, either braise it in the marinade or steam the fish and keep the marinade by cooking it down so that you can serve it together. Don’t throw the marinade away, keep it. It’s truly a delicious recipe
Taffym
01/23/2022 05:31:00 PM
I tried this recipe, hoping to make a great impression on my first home cooked meal for a new love. I cooked exactly as instructed, and served it with rice and braised leeks. To say it was FANTASTIC was an understatement. I used light colored miso paste (there are darker versions too) but the light version was perfect, in my opinion! Also, make sure you get a quality piece of fish too. Don’t skimp there! I made a side platter of braised leeks and to add a bit of wow factor, I coated the inside of a medium sized small bowl with toasted sesame seeds, added the sushi rice, then slightly packed it down then flipped it out and sprinkled with chopped scallions. I also fried some chopped canned biscuits and dusted then with just a tiny bit of sugar. This recipe is definitely delicious and a keeper!! I will make this again and again!
Emily Bridges
07/19/2023 06:35:04 PM
Wow. Excellent. I made this almost to the recipe, but made it more budget friendly by using fresh tilapia (and will use cod next time but it was frozen). I left the brown sugar out for dietary reasons. The mirin made it sweet enough for me anyway. I added a little bit of rice wine vinegar as well, which gave it a kick. I will say that I did the white fish and salmon and the white fish was far superior. The salmon taste overpowered the marinade. Because of some of the other reviews I cooked down and reduced the marinade into a sauce and served it with sticky jasmine rice. Plenty of green onions takes it to the next level! Will definitely be making this one on repeat and can't wait to try it with cod!
Mike Dutch
07/12/2021 09:37:12 PM
Marinated overnight in shio-koji (wiped off before miso marinade) to make it even more awesome!
Mark Perez
05/08/2019 01:42:57 PM
My roommates went crazy over it.
AnnieGirl822
09/25/2016 03:12:52 PM
This was delicious!! And we were so relieved because we got Sea Bass for $29.99/pound. Yikes! We followed the recipe to the letter with just a few mechanical tweaks. I ended up putting the marinade in the blender because the miso paste is very thick and hard to mix in. The blender did it lickety split. I felt the cooking instructions were a bit vague and the comments made them even more confusing. It looks like some people baked this at 400. Some people pan seared it. I stuck with the instructions to broil it. My oven has a broil setting that is at 500 degrees. I really wanted to get the caramelization which happened really fast on broil.(less than 4 minutes/side) I then turned the oven to bake at 350 and moved the rack down and baked it for about 7 minutes. We can't wait to try this again on cod, salmon and halibut. It's a keeper!
Jason B
09/14/2025 03:16:20 PM
Super easy to make. Taste like Nobu. Full of umami
WobblySpoon5757
05/27/2025 11:51:36 AM
The Costco sea bass came out perfect. I used about 2 tbsp honey instead of brown sugar and marinated overnight. I did not save the marinade but maybe next time I will save it to use again.
Dorothy Scott
05/14/2025 03:32:08 AM
So simple yet AMAZING 🙌
Vince M
03/28/2025 11:43:52 PM
Lovely flavor. One of the best sea bass preparations I have ever made/tasted.
GutsySauce8102
02/16/2025 03:45:56 PM
So easy and delicious. I recommend marinating overnight or at least six hours for more flavor. I poured extra marinade on top. Served with Japanese style fried rice.
HappyFlour6354
02/06/2025 06:29:47 AM
Been making this recipe as written, with the exception of leaving the marination overnight/24 hours. It soaks up the flavor so much better, and the Chilean Sea Bass can withstand the long marination. I have taken others’ helpful hints regarding the marinade reduction, but found that it’s not needed because it is very flavorful on its own due to long marination. My kids love to eat it with plain sushi rice. My personal favorite is with a side of Orzo pasta tossed with roasted veggies, tomato medley, micro greens, feta cheese, roasted pine nuts, and fresh basil, finished with homemade balsamic vinaigrette! 😋🥰
Dora Lee
02/01/2025 08:32:05 PM
Easy to make and rave reviews. Shared this recipe with others.
Pegharris
01/06/2025 02:06:21 AM
I get my Sea Bass at Costco and this recipe makes it worth the price.
James Thompson
11/22/2024 11:52:26 PM
This one turned out even better than the photo.