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Delicious Seared Halibut with Charred Lemon Sauce

Overhead pic of Seared Halibut topped with Charred Lemon Sauce and Gremolata

Seared Halibut with Charred Lemon Sauce is a natural pairing. The halibut develops a nice crust on the outside while the fillet stays moist on the inside. Plus, the Charred Lemon and Garlic Sauce gives a nice pop of sweet acidity and when topped with Gremolata it ties all the flavors together!

Seared Halibut Filet with Charred Lemon Sauce plated with roasted tri color potatoes and grilled asparagus. With charred lemon half to squeeze over the dish.
Let’s Sear Some Fish!

The Magic of Charring Lemons

Sure, I could have made the lemon sauce with regular lemon juice but cooking is all about developing and layering flavors. Charring lemons will add some magic to the dishes you cook.

By charring lemons on a hot surface such as a grill or cast iron skillet, a few things happen. The first is obvious, the char caramelizes the natural sugars in the lemon giving the flesh and rind of the lemon color. Plus giving a subtle smokiness to the lemon.

Second, the lemon juices inside the flesh cook for a bit while it is cooking. This sweetens up the sugars in the juice as well.

Lastly, the overall cooking process decreases the acidity of the juice giving a rounded flavor to the juice. This gives the sauce less of a tang and more palatable and enjoyable balance.

Searing – Mastering the Maillard Reaction

I am sure you have heard the term Maillard Reaction but what is it about the process that has garnered so much attention over the last decade or so? As chefs began to delve into the science of cooking, terms were brought into the spotlight. It seemed like terms started being talked about by tv chefs and littered in cooking blogs out of nowhere. Terms like Umami, Molecular Gastronomy and even Maillard Reaction seemed to come out of nowhere. But in reality the science of cooking has been around longer than you may realize.

Louis-Camille Maillard (Courtesy Wikipedia)

In 1912, the Maillard Reaction was discovered by French scientist Louis-Camille Maillard. He published a paper explaining his discovery of the reaction of amino acids and reducing sugars during the cooking process. These two compounds, when heat was introduced resulted in “discoloration” or browning due to their reaction.

So why do we discuss the Maillard Reaction?

Searing meats (including fish) is one of the quickest ways to visually see science in action. But it is not only about seeing science, it is about developing flavors and textural elements of foods. These are some of the building blocks of how we perceive flavor of how something tastes.

Learning the ropes on the saute station, I recall being scolded when I moved a piece of meat in a pan while it was cooking. The reaction I encountered from a chef or two was to “let it sit”. This step in cooking, especially searing, allows the Maillard Reaction to take place. This critical time in the pan allows those sugars to reduce and react with the amino acids creating wonderful flavor.

Setting Yourself Up For Success

In order to not follow in my footsteps and get scolded, here are some basics of sauteing that will help deliver a perfectly seared fish every time.

Hot Pan Hot!

Pre heating your cooking surface before adding anything to the pan is vital. Heating the cooking surface opens up the pores of the metal or stone you are cooking on.

Adding the Oil

Once you have preheated the pan, add the oil. Swirl to coat the pan. (If you are using a cast iron or soapstone on a grill you can wipe oil to coat the surface). Allowing the oil to coat the surface seals the open pores of the surface.

Allow the Oil to Come up to Temperature Before Adding Protein

Adding the protein before the oil is hot gives way to having the meat stick to the pan. Plus the meat will sit in cool oil before it begins to cook. Heat the oil first!

Searing vs Frying

The volume of oil in a pan can quickly transition from searing to frying if too much is used. Keep in mind that with searing, minimal oil is key. Allow the heat of the pan to begin that Maillard Reaction.

Let it sit!

Allow the meat to sit in the pan without moving it. There will be a point when the meat sticks to the pan. This is OK don’t panic! With minimal oil in the pan the meat will stick, but there comes a point when the meat will release from the pan. It will come after the browning of the meat happens.

Lastly –
  • You control the heat – depending on the thickness and type of meat, the level of heat can and will determine the quickness of browning and how fast the protein will cook. When searing, it is always best to start out with a higher heat and decrease to where the protein is searing at an even rate. Keeping the heat too high will turn the sear into a burn quickly.

Remember, even the most skilled cook will have an off day and have to make adjustments or remake something. Mastering the skill of sauteing leads to other steps to creating an amazing meal. Going from searing meat to creating a pan sauce is one of the best meals you will have. The flavor transition from searing transitioning to the creation of a sauce in the same pan is amazingly easy and one of the most delicious meals.

I hope you Enjoy the Seared Halibut with Charred Lemon Sauce!

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Charred Lemon Sauce goes great on Salmon and even Grilled Chicken, give it a try!

Seared Halibut Filet with Charred Lemon Sauce plated with roasted tri color potatoes and grilled asparagus. With charred lemon half to squeeze over the dish.

Seared Halibut with Charred Lemon Sauce

5 from 1 vote
Print Recipe
Course: Dinner, Lunch
Cuisine: American, French
Keyword: BBQ Sauce, Charred, Halibut, Lemon, Seared
Prep Time: 15 minutes
Cook Time: 15 minutes
Servings: 2 servings
Author: Chef Tony Zentgraf
Give this a try! The Charred Lemon Sauce Goes Great on Grilled Chicken too!
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Tried this recipe?Mention @culinaryseasons or tag #culinaryseasons!

Recipe Multiplier

Seared Halibut

  • 1 lb Halibut Fillet
  • ½ tsp Kosher Salt
  • ½ tsp Black Pepper
  • 2 tbsp Vegetable Oil

Charred Lemon Sauce

  • 2-3 ea Lemons - cut in half
  • 2 tbsp Olive Oil
  • 1 ea Shallot - minced
  • 4 ea Garlic Cloves - minced
  • ¼ tsp Red Chili Flakes
  • 6 oz White Wine
  • 2 tbsp Cold Salted Butter
  • ¼ tsp Black Pepper
  • ¼ tsp Kosher Salt - To Taste

Gremolata

  • ½ cup Flat Leaf Parsley - minced
  • 3 ea Garlic Cloves - finely minced or grated on microplane
  • 1 ea Lemon Zested - zest only – cut and use the lemon for grilling
  • pinch Black Pepper

Instructions

Making the Gremolata

  • Mince the flat leaf parsley and place into a bowl.
  • Fine mince or grate the garlic and place into the bowl with the parsley.
  • Zest the lemon and add to the other ingredients.
    Add black pepper to the bowl.
  • Mix well to combine.
    Mix can be made ahead and kept in the refrigerator until ready to use.

Making the Charred Lemon Sauce

  • Charring the lemons can be done on a grill (recommended) or in a cast iron skillet with a touch of oil.
    Preheat the grill or skillet. Brush a small amount of oil onto the lemons.
  • Place the lemon halves onto the grill grates (cast iron grill grates work great for this but you can use any style) or on to the heated cast iron.
    Let the lemons sizzle away for a minute before checking the char on the lemons.
    Total cooking time for the lemons is about 2-4 minutes depending on the heat of the cooking surface and how charred you desire.
    Charring lemons on a cast iron grill grates. Tongs hold a lemon already charred to show depth of color of the lemons. Charring the lemons mellows the acidity and gives caramelizes the sweetness of the lemons.
  • Remove the lemons from the grill and hold aside to cool until ready to use.
  • Mince the shallot and garlic.
  • Heat a saute pan over medium high heat.
    Add the olive oil and allow to come up to temperature.
  • Add the shallot and saute until translucent.
    Add the garlic and red chili flakes, continue to saute over medium heat.
    Allow the shallots, garlic and chili flakes to cook to infuse the olive oil. Avoid browning the shallots and garlic.
  • Increase the heat to high and add the white wine.
    Reduce by half.
  • Squeeze the lemons through a strainer to avoid seeds from entering the sauce.
    Use 3-4 halves of the charred lemons for the sauce depending on the size of the lemons.
  • Bring the sauce to a simmer then reduce the heat to low.
    Add the two tablespoons of butter to the pot and swirl over the very. low heat to melt the butter and incorporate into the sauce.
  • Season with black pepper and kosher salt.

Searing the Halibut

  • Pat dry the halibut fillet with paper towels. This will allow for a good sear to happen while cooking.
    Season the fish with salt and black pepper.
  • Preheat your preferred cooking surface. A griddle, cast iron skillet, saute pan or grill. I used a soapstone on a grill to achieve the crust on the sear.
  • Add a tablespoon of two of cooking oil to the cooking surface and spread to coat the surface.
  • The cooking surface should be fairly hot. You want to develop a nice crust on the fish.
  • Place the halibut presentation side down first onto the cooking surface.
    Placing the halibut fillet onto the soapstone cooking surface on the kamado joe.
  • Depending on the thickness of the fish cooking time will vary.
    The fish used in the video was a 1 lb portion and it was over 1" thick. The cooking time was approximately 12 minutes. I used a wireless thermometer to watch the internal temperature to avoid overcooking the fish. See notes below on using a thermometer.
  • Allow the fish to sit undisturbed on the cooking surface.
    Once the fish develops a golden crust, turn the fish. Repeat on the second side.
    Turning over the seared halibut to cook the second side. Picture shows the fish mid turning motion with a golden crisp crust on the first side.
  • The fish will begin to release from the pan when it has developed a crust. Be patient. If you are concerned that it is burning, turn down the heat.
  • Once the fish has finished cooking on the second side, remove from the pan.
    Using a spatula to remove the seared halibut from the grill. The halibut was seasoned with salt and black pepper and has a nice golden crust on the top.

Plating the Seared Halibut with Charred Lemon Sauce & Gremolata

  • Place the seared halibut presentation side up so the nice crust from the first side shows.
    Spoon the Charred Lemon Sauce over the fish so the sauce covers the halibut and runs onto the plate.
    Spooning Charred Lemon Sauce over Seared Halibut on a plate with roasted potatoes, and grilled Asparagus.
  • Place a tablespoon or two of Gremolata on top of the Seared Halibut.
    Enjoy!
    Sprinkling Gremolata (parsley, garlic and lemon zest) over the seared halibut with charred lemon sauce

Notes

If choosing to use a wireless thermometer or cooking the halibut by temperature with another thermometer go by these instructions –
  • Halibut can be cooked to 130° for medium doneness.
  • If you prefer juicer halibut and do not mind fish cooked to medium rare cook the fish to 125° 
  • Remember that when you are cooking, doesn’t matter if it is on the stove, in the oven or on the grill, there will be carry over cooking. This means that the temperature will continue to rise after it is removed from cooking. 
  • Typically fish should not rise more than 5° but this can also depend on the size of the fish. Example- cooking a filet vs whole fish. 

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