Instant Pot Fish Soup recipe

For the longest time, the idea of making fish soup at home filled me with a quiet dread. I had visions of a murky broth, the dreaded “fishy” smell permeating my kitchen, and worst of all, sad, rubbery, overcooked pieces of fish. It seemed like a dish best left to seaside restaurants with access to the day’s freshest catch. Then, the Instant Pot entered my life, and with it, a newfound culinary bravery. I decided to tackle my fish soup fears head-on. I researched classic chowders and bouillabaisse, focusing on their flavor-building techniques. My first attempt was cautious, but the result was staggering. The Instant Pot worked its pressure-cooking magic, creating a deeply flavorful and aromatic broth in minutes that tasted like it had been simmering for hours. And the fish, added right at the end, was steamed to a state of pearly, flaky perfection. The soup was bright, creamy, and profoundly comforting. My family, initially skeptical, devoured their bowls and immediately asked when I would be making it again. It has since become one of our most requested cold-weather meals—a testament to how the right tool and technique can transform an intimidating dish into an easy, elegant, and absolutely foolproof weeknight wonder.

Why You’ll Love This Instant Pot Fish Soup Recipe

This isn’t just another soup recipe; it’s a masterclass in efficiency and flavor. The Instant Pot is uniquely suited to creating a spectacular fish soup, and here’s why this specific recipe is a guaranteed winner.

• Incredible Depth of Flavor, Fast: The true magic of this soup is the broth. We use the Instant Pot’s sauté function to build a foundation of flavor by softening aromatics like onion, celery, and fennel. Then, the high-pressure environment works as a super-charged flavor extractor, infusing the broth with all that savory goodness in a mere 5 minutes of cooking time—a process that would take at least an hour on the stovetop.
• Perfectly Cooked, Flaky Fish Every Time: The number one mistake in making fish soup is overcooking the fish. This recipe completely eliminates that risk. The soup base and vegetables are cooked first under pressure. The delicate pieces of fish are then added at the very end, to gently poach in the hot broth for just a few minutes until they are perfectly tender and flaky.
• A True One-Pot Meal: From the initial sauté to the final simmer, every single step happens in the inner pot of the Instant Pot. This means you have only one pot to clean, making it the ideal recipe for a hassle-free weeknight dinner or a relaxed weekend lunch.
• Healthy, Hearty, and Satisfying: Packed with vegetables, lean protein from the fish, and healthy fats, this soup is a complete and balanced meal in a bowl. The potatoes make it hearty and satisfying, while the creamy broth feels indulgent and comforting without being overly heavy.
• Endlessly Adaptable: Think of this recipe as your perfect template. You can easily switch up the vegetables, use different types of fish, add other seafood like shrimp or mussels, or make it dairy-free. It’s a wonderful base for your own culinary creativity.

The Best Ingredients for a Rich and Flavorful Fish Soup

The beauty of this soup lies in its simple, high-quality ingredients. Each one plays a specific role in creating the final, harmonious flavor.

• Butter and Olive Oil: 1 tablespoon of unsalted butter and 1 tablespoon of olive oil. This combination provides the rich flavor of butter with the higher smoke point of olive oil, perfect for sautéing the aromatics without burning.
• Aromatics:
  • Yellow Onion: 1 medium, finely diced.
  • Celery: 2 ribs, finely diced.
  • Fennel: 1 small bulb, core removed and finely diced (about 1 cup). This is the secret weapon! Fennel has a very mild, sweet anise flavor that pairs beautifully with seafood and adds a layer of complexity you can’t quite put your finger on.
  • Garlic: 4 cloves, minced. Essential for its pungent, savory depth.
• Potatoes: 1 pound of Yukon Gold potatoes, peeled and cut into 1/2-inch dice. Yukon Golds are perfect because they are waxy enough to hold their shape during pressure cooking, yet become wonderfully creamy.
• Dry White Wine: 1/4 cup, such as Pinot Grigio or Sauvignon Blanc. This is used to deglaze the pot, lifting up all the flavorful browned bits. The alcohol cooks off, leaving a subtle brightness and acidity. You can substitute with more broth if you prefer.
• Broth: 4 cups of low-sodium chicken or vegetable broth. A high-quality broth forms the backbone of your soup. Fish stock is also an excellent choice if you have it.
• Seasonings:
  • Bay Leaf: 1.
  • Kosher Salt: 1 teaspoon, plus more to taste.
  • Freshly Ground Black Pepper: 1/2 teaspoon.
  • Red Pepper Flakes: 1/4 teaspoon (optional), for a gentle warmth.
• Firm White Fish: 1.5 pounds, skinless, cut into 1.5 to 2-inch chunks. This is crucial. You need a fish that will hold its shape. Excellent choices include Cod, Halibut, Haddock, or Pollock. Avoid delicate fish like tilapia or flounder, which will disintegrate.
• Heavy Cream: 1/2 cup, at room temperature. This is stirred in at the end to create a luxurious, creamy finish.
• Fresh Herbs: 1/4 cup of fresh dill or parsley, finely chopped, for a burst of freshness.
• Lemon: 1, for juicing. A final squeeze of fresh lemon juice brightens all the flavors.

Step-by-Step Instructions: Your Guide to Instant Pot Fish Soup

Follow these detailed steps for a flawless result. The process is straightforward, with specific techniques that guarantee success.

Step 1: Build the Flavor Base

1. Turn your Instant Pot to the Sauté function on high. Add the butter and olive oil to the pot.
2. Once the butter is melted, add the diced onion, celery, and fennel. Sauté for 5-7 minutes, stirring occasionally, until the vegetables have softened and the onion is translucent.
3. Add the minced garlic and the optional red pepper flakes. Cook for one more minute until the garlic is fragrant, being careful not to let it burn.

Step 2: Deglaze and Prepare for Pressure

1. Pour in the white wine to deglaze the pot. Use a wooden spoon or spatula to scrape up any flavorful browned bits (the fond) from the bottom of the pot. Let the wine simmer for about a minute until it has mostly evaporated.
2. Press the Cancel button to turn off the Sauté function.
3. Add the diced potatoes, the broth, the bay leaf, 1 teaspoon of kosher salt, and 1/2 teaspoon of black pepper to the pot. Give everything a good stir to combine.

Step 3: Pressure Cook the Soup Base

1. Secure the lid on the Instant Pot. Make sure the steam release valve is set to the Sealing position.
2. Select the Pressure Cook (or Manual) button and set the timer for 5 minutes at high pressure.
3. Once the cooking cycle is complete, let the pressure release naturally for 10 minutes. This helps the flavors settle and prevents starchy liquid from spewing out. After 10 minutes, carefully move the valve to the Venting position to release any remaining steam.

Step 4: The Final Act – Cooking the Fish to Perfection

1. Once the float valve has dropped, carefully open the lid. Remove and discard the bay leaf.
2. Select the Sauté function again, but adjust it to the Less or Low setting. You want a gentle simmer, not a rolling boil.
3. Gently place the chunks of fish into the hot broth. Let them poach for 3-5 minutes, stirring very gently once or twice, just until the fish is opaque and flakes easily when poked with a fork. This step happens very quickly, so don’t walk away!
4. Press Cancel to turn off the heat completely. This is important to prevent the cream from curdling.
5. Slowly pour in the room-temperature heavy cream and stir gently to combine.
6. Stir in the chopped fresh dill (or parsley) and the juice of half a lemon.
7. Taste the soup and adjust the seasoning as needed. It will likely need another pinch of salt and pepper. Add more lemon juice if you feel it needs more brightness.

Nutrition Facts

These values are an approximation and can vary based on the specific brands and types of ingredients used.

• Servings: 6 large bowls
• Serving Size: Approximately 2 cups
• Calories Per Serving: 350-400 kcal

This soup is an excellent source of lean protein, Omega-3 fatty acids (depending on the fish), and vitamins from the vegetables, making it a nutrient-dense and satisfying meal.

Preparation Time

Thanks to the Instant Pot, this elegant soup comes together surprisingly quickly.

• Active Preparation Time: 15 minutes
• Pressure Cook Time: 5 minutes (plus ~10-15 minutes to come to pressure)
• Pressure Release Time: 10 minutes
• Final Simmering Time: 5 minutes
• Total Time: Approximately 45-50 minutes

How to Serve Your Instant Pot Fish Soup

Presentation elevates this simple soup into a truly special meal. Here are some of my favorite ways to serve it:

• The Classic Chowder Presentation:
  • Ladle the hot soup into large, rustic bowls.
  • Garnish with an extra sprinkle of fresh dill or chives.
  • Add a generous crack of fresh black pepper over the top.
  • Serve with classic oyster crackers or saltines for crumbling into the soup.
• For an Elegant Dinner:
  • Drizzle a small amount of high-quality extra virgin olive oil or a flavored fennel oil over the surface of the soup in each bowl.
  • Serve with a lemon wedge on the side of the bowl for each person to add a fresh squeeze of citrus to their liking.
  • Pair with a warm, crusty baguette or sourdough bread for dipping into the delicious, creamy broth.
• Making it a Complete Meal:
  • The soup is hearty enough to be a standalone meal, but it also pairs beautifully with a simple side.
  • Serve alongside a crisp green salad with a light vinaigrette. The acidity of the dressing will provide a lovely contrast to the creamy soup.
  • For a truly comforting experience, pair a smaller cup of the soup with a half of a grilled cheese sandwich on sourdough.

5 Additional Tips for the Best Fish Soup

1. Don’t Skip the Fennel: If you’re not a fan of strong licorice flavors, don’t worry. When fennel is cooked, its flavor mellows into a delicate, aromatic sweetness that enhances the other ingredients. It is the single ingredient that can take your soup from “good” to “gourmet.”
2. Using Frozen Fish: This recipe works wonderfully with frozen fish, making it even more convenient. There’s no need to thaw it completely. Simply rinse the frozen fish chunks under cold water to remove any ice crystals, pat them dry, and add them to the pot as directed. You may need to add 1-2 minutes to the poaching time.
3. For a Thicker, Chowder-Style Soup: If you prefer a much thicker consistency, you can create a cornstarch slurry. After the pressure-cooking stage, remove about 1/2 cup of the hot broth into a small bowl. Whisk in 2 tablespoons of cornstarch until completely smooth. While the soup is simmering on the Sauté function, slowly pour the slurry back into the pot, stirring constantly until the soup has thickened. Then, proceed with adding the fish.
4. Make It Dairy-Free: To make a dairy-free version, simply substitute the butter with an equal amount of olive oil or vegan butter. Instead of the heavy cream, use one 13.5-ounce can of full-fat coconut milk (stirred well). Add it at the end just as you would the cream for a rich and delicious result.
5. Add a Variety of Seafood: Turn this fish soup into a full-fledged seafood chowder! In the final step, along with the fish chunks, you can add 1/2 pound of raw, peeled shrimp and/or 1/2 pound of mussels. They will cook in the same 3-5 minutes as the fish. The shrimp will turn pink and opaque, and the mussels will open up (discard any that do not).

Frequently Asked Questions (FAQ)

Here are answers to some of the most common questions about making fish soup in the Instant Pot.

1. My fish fell apart and turned to mush. What happened?
This is the most common issue and is almost always due to one of two things: using the wrong type of fish or overcooking it. It is essential to use a firm-fleshed white fish like cod or halibut. Secondly, the fish must be added at the very end and poached gently for only a few minutes. Never pressure cook the fish with the rest of the ingredients.

2. Can I make this soup ahead of time?
You can make the soup base (up to the point before adding the fish and cream) up to 2 days ahead of time and store it in the refrigerator. When you’re ready to serve, bring the base to a gentle simmer in the Instant Pot on the Sauté function, and then proceed with adding the fish, cream, and herbs as directed. Reheating soup with fish already in it can cause the fish to become tough and overcooked.

3. What’s the best way to store and reheat leftovers?
Store leftover soup in an airtight container in the refrigerator for up to 2 days. To reheat, do so gently in a saucepan over low heat on the stovetop, stirring occasionally until just warmed through. Avoid boiling the soup, as it can cause the cream to separate and the fish to become rubbery. Microwaving is not recommended for the same reasons.

4. I don’t have white wine. What can I use instead?
The white wine adds a nice layer of acidity and complexity, but it’s not essential. You can simply deglaze the pot with an equal amount of your chicken or vegetable broth. Alternatively, you can add a tablespoon of white wine vinegar or apple cider vinegar along with the broth to mimic some of that acidity.

5. Can I use salmon in this soup?
While you can use salmon, its rich, oily flavor will significantly change the taste profile of the soup, making it much more distinctively “salmon chowder.” If you choose to use it, cut it into chunks and follow the same poaching method at the end. The classic, clean flavor of this recipe is best achieved with a milder white fish.

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