This rich and creamy keto seafood chowder recipe is a healthy comfort food meal. Make it with clams or with white fish. Either way, it's an easy low carb dinner recipe that takes less than 40 minutes, start to finish.
Close up shot of a bowl of keto clam chowder

This rich and creamy keto seafood chowder recipe is a healthy comfort food meal. Make it with clams or with white fish. Either way, it’s an easy low carb dinner recipe that takes less than 40 minutes, start to finish.

Titled image of a bowl of keto clam chowder on a white table with a blue napkin.

I first wrote this keto seafood chowder recipe back in the early days of All Day I Dream About Food, all the way back in 2012. It’s rich and hearty, and can be made as clam chowder or fish chowder. It’s a staple in our house during the cold and rainy weather.

I lived in Boston for over 11 years and I like to think that makes me something of an expert on clam chowder. But maybe that just really makes me an expert on how to pronounce clam chowder with a Boston accent.

Repeat after me: Chowdah. Chowdaaaah. You mustn’t say “Chowderrr”, that’s too boring and it won’t taste as good.  I don’t care where you are from…California, Canada, even France. Really play it up, roll it out over your tongue, enjoy it. It will make the clam chowder experience that much more delicious.

Top down photo of a pot filled with keto seafood chowder over a striped napkin

Giving clam chowder a keto makeover

I do love me some good chowdah. Hearty, full of cream, lightly flavored with fish or clams, it fills you up with goodness and warms you to your toes.  But conventional seafood chowder is often so thick, your spoon can stand straight up in it. I’ve had the chowder from Union Oyster House and it’s more like eating porridge

All of that glorious thickness comes from copious amounts of potatoes and flour, and you can believe it packs a hefty carb punch. So how exactly does one go about reducing the carbs to make a keto friendly chowder?

Replacing the potatoes is easy and you’ve got some choices here. My favorite substitute for keto soups and stews is turnip, as I think it ends up most like potatoes in taste and texture. Daikon radish is also a great alternative. Simply cube these vegetables the same way you would a potato and add it in. Do keep in mind that because they aren’t as starchy, they cook through a little faster so you want only want to add them in for that last 15 to 20 minus of cooking.

To thicken the broth and make it thicker and richer, you can whisk in some glucomannan or xanthan gum toward the end of cooking.

Clams or fish, it’s up to you!

I deliberately called this seafood chowder so that you can decide for yourself whether you want fish chowder or clam chowder. The cooking method and time of addition are the same, either way.

For fish, I recommend a firm white fish like cod or halibut, cut into 1 inch pieces. For clams, you want to add 2 small (6 oz or so) cans of drained clams.

One thing to note is that clams do actually contain carbs. Strange but true! Most molluscs have some carbs in them, even though they seem like they should just be protein and fat. So using clams will add a few carbs to each serving.

Two bowls of keto seafood chowder on a white table with a striped napkin in the background.

How to make keto seafood chowder

This is an easy recipe that takes minimal prep time and cooks up in less than 30 minutes. Here are my best tips for getting it right.

Cook the bacon

Really make sure to get it nice and crisp, so that it doesn’t go soggy when you add it to the chowder. I like to chop my bacon before cooking so that it crisps and browns more evenly.

Add the onion and turnips

Remove the bacon to a plate but leave all the remaining grease in there, as it’s perfect for cooking the onion and turnips. Cook just until the onions are tender.

Add the chicken broth and simmer

Simmer the broth until the turnip is fork tender, about 10 to 15 minutes. Then add some dried thyme and season to taste with salt and pepper.

The fish cooks quickly!

In a seafood chowder such as this, the fish or clams get added only at the very end of cooking, as they cook very quickly. They only need about 4 minutes to cook through.

Add cream and butter

These ingredients go in at the very end as they don’t really need to cook. And cream can curdle if it’s added to a chowder too early.

Thicken the broth

You can eat the chowder just as it is but if you prefer a thicker broth, I recommend glucomannan powder. It’s made from konjac root and thickens really nicely with only 1/2 to 3/4 teaspoon. I also use it in my keto gravy recipe.

Close up shot of a bowl of keto clam chowder

Can you make keto chowder ahead?

As with all fish based soups and stews, keto seafood chowder is best when it’s freshly made. However, if you have leftovers, you can heat them gently the next day and they are just as good. Store it in a covered container in the fridge.

I wouldn’t keep it around longer than two or three days and it’s not a recipe that freezes well.

This really is a wonderful chowder and you wouldn’t be able to tell the turnips from potatoes for a second unless I told you that’s what they were.

And I’ve made this recipe with both fish and clams – it’s delicious both ways. With the chilly weather upon us, it’s so comforting to whip up a pot of this delicious low carb chowder. You won’t miss the potatoes or the flour for a second.

More delicious keto fish recipes

Close up shot of a bowl of keto clam chowder
4.86 from 71 votes

Hearty Keto Seafood Chowder

Servings: 6 servings
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
This rich and creamy keto seafood chowder recipe is a healthy comfort food meal. Make it with clams or with white fish. Either way, it's an easy low carb dinner recipe that takes less than 40 minutes, start to finish.

Ingredients
 

Instructions

  • In large saucepan over medium heat, cook the bacon until crisp. Remove with a slotted spoon, and drain on paper-towel lined plate.
  • Add the onion and turnips to the bacon grease and cook until the onions are tender, about 5 minutes. Add the chicken stock and simmer until the turnip is tender, 10 to 15 minutes. Season with thyme, salt and pepper.
  • Add the fish and continue to simmer until the fish is cooked through, about 4 minutes. Stir in the heavy cream and the butter. For a thicker broth, whisk in the glucomannan at the end of cooking.
  • Sprinkle each serving with the cooked bacon.

Video

Nutrition

Serving: 1serving = about 1 cup | Calories: 394kcal | Carbohydrates: 6.3g | Protein: 17.3g | Fat: 31.7g | Fiber: 1g
I’d love to know your thoughts, leave your rating below!

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4.86 from 71 votes (19 ratings without comment)

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161 Comments

  1. how many cups would you say is 2 medium turnips?
    Thank you 🙂

    1. It’s best to do it by weight. USDA says a medium turnip = 122g.

  2. 5 stars
    forgot! I also used a rutabaga and I can’t tell it’s not potato!!!!!!!

  3. Kelley W Stallworth says:

    5 stars
    Made this with clams and it was better than “normie” clam chowder! The only thing I’m hate about it is I didn’t try it sooner!!! Thank you for all you do!

  4. Excellent recipe. It’s well suited to add your favourite seafoods to the chowder…scallops, shrimp, haddock etc. Cereriac is also a good substitution for potatoes.
    I’ve never considered it a selling point that “chowder is so thick you can stand a spoon in it”. If you’re ever in Maine, go to Billy’s Chowder House in Wells. Clam and seafood chowders and lobster stew with no thickeners at all. So, so good!

  5. 5 stars
    Delish. 1 pound of halibut, 5 pieces of bacon! Next time more bacon and 1 can of clams. A very warming soup.

  6. 4 stars
    I made this using cod and rockfish. I didn’t add the thickener, but I blended some of the turnips when they were cooked, which helped thicken it. I really enjoyed this and will definitely make it again. I also added a little red pepper flakes for a spicy touch.

  7. Joanne Garrisi says:

    5 stars
    most excellent! I didn’t have turnips in the house but I did have radishes so I swapped them out and added two stalks of celery.

  8. Fran Barton says:

    5 stars
    I have been making this recipe with various types of seafood. Tonight I used minced clams, shrimp and lump crab. I cannot do dairy so I’ve been using coconut milk in place of cream. It’s such a wonderful flavor. Thanks for a recipe that is easy to adapt to my dietary needs.

  9. 9 Lives Lover says:

    5 stars
    Yowsa!! I have never had fish chowder before, but my husband had it in Boston years ago. He said this was better!!

  10. I’ve made this a few times and it is delicious! Sometimes I add shrimp or scallops with the fish. Another great recipe from Carolyn. If you haven’t tried this recipe yet then your missing out….yum!!

  11. Heidi Dorsey says:

    5 stars
    I used haddock and shrimp and my family loved it. Will definitely make again!

  12. 5 stars
    I’ve made this twice with clams. It’s very good and very easy. I happen to have Glucomannan capsules at home (that I’ve never really taken) so both times I opened some capsules and put the powder in to thicken the soup. I could eat this for multiple days in a row without getting tired of it. I do add some cayenne powder as I like everything to be a little spicy.

    1. 5 stars
      perfect and simple! I used a blend of scallops, shrimps, white fish and salmon. I also added a dash of fish sauce, bit of dill and a tsp of Thai seasoning for a little kick. thanks so much, it’s delicious!

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