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    Home ยป Recipes ยป Recipes

    Vietnamese Cajun Crawfish Boil Recipe

    Published: Sep 11, 2022 ยท Modified: Jan 13, 2024 by Christina Jolam ยท This post may contain affiliate links. See end of article for more information. ยท 2 Comments

    Jump to Recipe·5 from 1 review
    Vietnamese Cajun Crawfish Boil

    If you love crawfish, and you love Asian flavors, get ready for the flavor explosion that is a true Vietnamese Cajun Crawfish Recipe. It's everything you love about a traditional Cajun crawfish, plus beautiful ginger, lemongrass and fish sauce notes. Strap on your crawfish bibs and let's do this!

    finished recipe poured out on parchment on a table

    If you've spent any time in Houston, you already know about the Vietnamese community's dramatic influence on the local food scene. One of the most popular fusion dishes in Houston brings bright Southeast Asian flavors to the traditional Cajun spice of a crawfish boil.

    So today I am sharing my version of this remarkable seafood dish. It still has lots of garlic and Cajun spices, just like the original. But it's significantly enhanced by a butter sauce studded with lemongrass, ginger, fish sauce, limes and cilantro.

    It's my favorite way to eat crawfish and I hope you love it as much as my family does.

    Ingredients for this recipe:

    ingredients for recipe laid out on a table and labeled.

    Before we get to the step by step directions, a few notes about the ingredients:

    Seafood: crawfish is the obvious choice here, but substitute shrimp if you're in a pinch. It's perfect with shell-on shrimp. For shelled shrimp, reduce cooking time.

    Vegetables: potatoes, corn and onions are the traditional mix. But feel free to customize the veggie mix to your liking! Mushrooms, artichokes, fresh green beans and celery are good options.

    Spice level: the butter sauce has a balanced level of heat. For a spicier kick, add extra cayenne pepper to the butter sauce, serve the boil with a bottle of hot sauce, or add Spicy Aioli to the buffet line!

    Full ingredient list and measurements included in the printable recipe card below.

    Step by step instructions :

    1. Make butter sauce

    To begin, make your butter sauce for the Viet-cajun seafood boil. Melt 2 sticks of butter in a small saucepan over medium heat. Add chopped garlic, green onion, red chili, grated ginger, diced lemongrass, Old Bay or Cajun seasoning, white pepper and fish sauce to the butter.

    ingredients for butter sauce being added to a pan for cooking.

    Sautรฉ the vegetables for 5-6 minutes until they are tender and fragrant. Add 1 cup of seafood stock and lime juice and bring the butter sauce back up to a simmer for 2-3 minutes. Taste and adjust seasoning.

    dipping sauce stirred in a small pot

    I like to use an immersion blender to emulsify the butter sauce at this point because it creates a far better dipping sauce experience for the seafood. So I use a stick blender right in the saucepan and mix for about 10-15 seconds, until the sauce turns a creamy orange color and is fully emulsified.

    sauce being emulsified in pot

    Then add in the diced cilantro. Taste again and adjust seasoning, as needed. Set aside.

    cilantro added to creamy butter sauce

    2. Clean crawfish

    Next, if using fresh crawfish, wash crawfish very well under running, cool water. (Anything called a "mud bug" will require a good cleaning!)

    The recipe below is for 2-3 people.

    Start by filling a stock pot or Dutch oven about ยพ full of water (for 6 pounds of crawfish I used a very large Dutch oven.)

    3. Prepare boil

    Add 2 tablespoons coarse sea salt, 2 tablespoons Old Bay Seasoning, 3 quartered onions, 2 bay leaves and a head of garlic cut in half to your pot of water.

    garlic bay leaves and onions in stock pot with spices and water.

    Bring the entire mixture to a boil over high heat. Add tiny red potatoes and corn.

    corn, potatoes and other ingredients added to stock

    Cook 8 minutes (if your potatoes are larger, cut them in half, or plan to boil at this stage for 10-12 minutes and wait to add the corn until the potatoes have boiled about 5 minutes). 

    4. Add crawfish to the boil

    I usually remove the corn and potatoes at this stage to make room for the crawfish. If your pot is big enough to hold both, go ahead and add crawfish.

    crawfish added to stock pot next to boiled potatoes and corn in a bowl

    Then bring the mixture back up to a boil. Once the pot is boiling, cover and cook 3-4 minutes, until the crawfish float to the surface and turn deep red.

    5. Combine sauce

    Next, transfer cooked crawfish, new potatoes, corn, onions and garlic to a second stock pot or large container with a lid and pour over the Vietnamese Cajun butter sauce. Shake to coat and let the ingredients soak up the sauce for 5-10 minutes.

    vietnamese cajun butter sauce poured over crawfish, potatoes, corn and onions.

    6. Garnish and serve

    Garnish with chives or parsley. Serve with extra sides of Viet-cajun butter sauce and spicy aioli.

    finished recipe poured over a table covered in parchment and garnished with cilantro, limes and butter sauce.

    I like to pour the crawfish and sides onto a large tray lined with parchment or newspaper in the center of the table, and dig in!

    crawfish boil on a table served with a beer

    Hungry for more Cajun seafood?

    • Creamy Cajun Shrimp Sauce
    • Crawfish Bisque Recipe
    • Crawfish Hand Pies
    • How to Boil Crawfish

    FAQ's and Serving Suggestions:

    What kind of equipment do I need to boil crawfish?

    This recipe feeds 2-3, and the equipment needed includes a large Dutch oven (or stock pot) for boiling the crawfish, corn and potatoes, a spider or strainer, and a second large pot or container with lid for steaming the hot crawfish in Cajun butter sauce, when finished.

    What is the best seasoning for a crawfish boil?

    Old Bay Seasoning, liquid crab boil, ground crawfish boil spices and even your own spice mix are all delicious in a crawfish boil. But I must note that after making seafood boils for years, I heard a Louisiana chef say that seasoning the crawfish boil water didn't do very much to season the crawfish - that was the job of the Cajun butter sauce. Seasoning the water just makes it smell delicious as your guests arrive. Ever since, I've cut way back on the crawfish boil seasoning I add to the boiling water. I want the water to be seasoned lightly, but I focus much more on adding flavor and spice to the cajun butter sauce, or in this case, the Viet-Cajun butter sauce. It's been a winning philosophy for me!

    When is crawfish season?

    In the United States, Louisiana crawfish season begins as early as December and ends around July. Although you can find quality frozen crawfish and crawfish tails year-round.

    What can I do with leftover crawfish boil?

    My favorite day-after meal is to dice up the potatoes and onions and garlic, cut the corn off the cob, and make a crawfish hash with poached eggs for brunch. I usually make extra potatoes and corn just to be sure I have enough leftovers on day 2.

    Can I add other seafood to the boil?

    My favorite addition is jumbo shrimp to make a crawfish and shrimp boil with all the delicious sides. Crawfish bring a very particular flavor and shelling / eating experience to the party. But shrimp can do a lot of heavy lifting in filling up hungry bellies! There's just a lot more meat in a shrimp than a crawfish. Snow crab and Gulf shrimp will also add a lot of flavor to your Viet-Cajun crawfish boil.

    What other vegetables can I add to the boil?

    In addition to the onions, garlic, corn and potatoes, other popular veggie add-ins include mushrooms, artichokes, celery and fresh green beans.

    How many pounds of crawfish should I buy per person?

    My rule of thumb: if serving the crawfish as an appetizer or with other hearty meats, 2 pounds per person will suffice. If crawfish is the main course and star of the event, 3-5 pounds per person is your best bet. For more details, see my full post on Buying Crawfish for a Boil.

    What should I serve with boiled crawfish?

    Obviously you'll need a delicious sauce or two. This Vietnamese Crawfish Sauce is a remarkable mash-up of Cajun and Vietnamese flavors popular in Houston. And I love serving a spicy aioli sauce for dipping crawfish and potatoes. For a side dish, napa cabbage slaw adds freshness and crunch to the party.

    Can I make a spicy Viet-cajun crawfish boil?

    The spice mix and cajun butter sauce you use will likely contain some level of heat. To dial it up, add an extra half teaspoon of cayenne pepper to your butter sauce, or another chili pepper. Adding more Cajun seasoning to the water will dilute the spice. But adding it to the butter sauce will keep it concentrated. Serving your crawfish with Spicy Aioli would add another spicy spark to your boil.

    How to store leftover crawfish boil?

    To store, keep butter sauce separate from your crawfish boil ingredients. Store in the refrigerator for up to 3 days. To reheat, check out my recommendations in How to Reheat Leftover Seafood Boil.

    Print
    clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
    finished recipe laid out on a table on parchment with butter sauce, lime wedges and a bottle of beer.

    Vietnamese Cajun Crawfish Boil Recipe


    5 Stars 4 Stars 3 Stars 2 Stars 1 Star

    5 from 1 review

    • Author: Christina
    • Total Time: 40 minutes
    • Yield: 2-3
    Print Recipe
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    Ingredients

    For the crawfish boil:

    6 pounds crawfish

    2 onions, quartered

    1 head garlic

    8-10 small red potatoes

    2-3 ears of corn on the cob

    2 tablespoons sea salt

    2 tablespoons Old Bay Seasoning

    2 bay leaves

    Lime wedges, for serving

    Viet-cajun butter sauce (for serving)

    2 sticks butter

    8 cloves garlic

    ยฝ cup green onions (white and light green parts)

    2 tablespoons diced red chili

    2 tablespoons fresh ginger

    2 tablespoons lemongrass

    2 tablespoons Old Bay or Cajun seasoning

    1 cups seafood stock

    2 tablespoons lime juice

    2 teaspoon fish sauce

    ยฝ teaspoon white pepper

    3 tablespoons cilantro


    Instructions

    1. To begin, make your butter sauce for the Viet-cajun seafood boil. Melt 2 sticks of butter in a small saucepan over medium heat. Add chopped garlic, green onion, red chili, grated ginger, diced lemongrass, Old Bay or cajun seasoning, white pepper and fish sauce to the butter. Saute the vegetables for 5-6 minutes until they are tender and fragrant. Add 1 cup of seafood stock and lime juice and bring the Viet-cajun garlic-butter sauce to a simmer for 2-3 minutes. Taste and adjust seasoning. I like to use an immersion blender to emulsify the butter sauce at this point - I think it creates a far better dipping sauce and soaking product for the seafood. So I use the immersion blender right in the saucepan and mix for about 10-15 seconds, until the sauce turns a creamy orange color and is fully emulsified. Add in the diced cilantro. Taste again and adjust seasoning, as needed. Set aside.
    2. If using fresh crawfish, wash crawfish very well under running cool water. (Anything they call "mud bugs" will require a good cleaning) Fill a stock pot or Dutch oven about ยพ full of water (for 6 pounds of crawfish I used a very large Dutch oven.)
    3. Add 2 tablespoons coarse sea salt, 2 tablespoons Old Bay Seasoning, 3 quartered onions, two bay leaves and a head of garlic cut in half to your pot of water. Bring the entire mixture to a boil over high heat.ย 
    4. Add tiny red potatoes and corn. Cook 8 minutes (if your potatoes are larger, cut them in half, or plan to boil at this stage for 10-12 minutes and wait to add the corn until the potatoes have boiled about 5 minutes). Add crawfish. Bring the mixture back up to a boil. Cover and cook 3-4 minutes, until the crawfish float to the surface and turn deep red.
    5. Transfer cooked crawfish, potatoes, corn, onions and garlic to a second stock pot or large container with a lid. Pour over the Vietnamese cajun butter sauce.
    6. Cover and let the crawfish soak in the butter sauce for 5-10 minutes. Garnish with additional fresh cilantro leaves and lime wedges. Serve with extra sides of Viet-cajun butter sauce and spicy aioli.

    Notes

    After making seafood boils for years, I heard a Louisiana chef say that seasoning the crawfish boil recipe water didn't do very much to season the crawfish - that was the job of the cajun butter sauce. Seasoning the water just makes it smell delicious as your guests arrive. Ever since, I've cut way back on the crawfish boil seasoning I add to the boiling water. I want the water to be seasoned lightly, but I focus much more on adding flavor and spicy seasonings to the Viet-cajun butter sauce. And it's been a winning philosophy for me!

    All of the crawfish I've seen in fish markets around our village are whole, in the shell, and already blanched and bright red. But since live crawfish have such a short cook-time (about 3-5 minutes) - reheating these blanched crawfish require the same process. So the pictures below show bright red crawfish at the beginning of the process, and if you're in the US using live or raw crawfish, your starting product will be a darker brown color when you first add them to your large pot of seasoned water at a rolling boil. Once they are cooked, they will float to the top of the pot a bright red color, and that's how you know they're cooked.

    • Prep Time: 20
    • Cook Time: 20
    • Category: Easy Recipes
    • Method: Stove Top
    • Cuisine: American, Cajun

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    About Christina Jolam

    Christina Jolam is a fish-forward recipe developer, photographer, and food writer. She creates easy and impressive seafood-focused recipes that home chefs of all levels can make and share. Her recipes and seafood expertise have been featured on CNNHealth, MSN, Pip and Ebby, Savoring the Good, Eat Blog Talk and more. She spends most of her time in a seaside village in Portugal with her adventure-loving husband, Ramesh.

    Reader Interactions

    Comments

    1. jerry

      December 26, 2023 at 8:03 am

      this sauce! it's amazing. the flavors are out of this world. perfect sauce for seafood, sausage, potatoes. All of it!

      Reply
      • Christina Jolam

        December 26, 2023 at 8:07 am

        Right? Couldn't agree more. So glad you loved it, Jerry. And thanks for coming back to leave a review!

        Reply

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