Shrimp and Clams with Douchi (Chinese Black Beans) and Citrus -

Shrimp and Clams in a Black Bean and Citrus Sauce

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Stir-fried Shrimp and Clams with Snow Peas in a Citrus and Black Bean Sauce
Stir-fried Shrimp and Clams with Snow Peas in a Citrus and Black Bean Sauce

Shrimp & Clams

With a Black Bean & Citrus Sauce

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I've always had a fondness for scientific names. I realize that many people don't exactly feel the same way I do - after all, it is easier to remember the word 'shrimp' than it is to remember Litopenaeus vannamei. Plus, it is admittedly more poetic to herald the coming of spring by pointing out the arrival of robins, rather than the incoming Turdus migratorius. So why do I like scientific names? Well for one thing, sometimes they just sound awesome. Take the humble soybean; do you know what its scientific name is? Glycine max. How awesome is that? It's like a vegetable superhero.  On top of that, its kind of cool (well, cool to me) to find out that we occasionally use scientific names without even realizing it; Asparagus is, officially, Asparagus officinalis, which kind of sounds like it should be its twitter handle.  But what I love most about a scientific name is the precision and specificity it carries.  Each two-part name, composed of a genus (always capitalized) and a specific epithet (never capitalized), is used to formally describe one species and one species alone.  Now, I won't get into the blurry lines that sometimes exist between species (that's basically 90% of my graduate work, and trust me when I say that it gets confusing), but suffice it to say that a scientific name tells you a lot more than a common name.

Diversivore is a science and education blog, but it is first and foremost about food - so what does all this have to do with food?  Language tends to be a pretty flexible thing, and the language surrounding food is no exception.  Take the word 'pepper,' which can mean black, green, or white pepper (Piper nigrum in its various states), pink pepper (Schinus molle),  Sichuan pepper (Zanthoxylum simulans),  alligator pepper (Aframomum melegueta), or any of the various hot and/or sweet peppers (Capsicum anuum in its many guises).  On the opposite side of that coin, we have situations where a single food is given countless names within a single language.  Eggplant (Solanum melongena) is a great example; in the English-speaking world alone it is also known as aubergine, melongene, garden egg, guinea squash, brinjal, and (my personal favourite) brown jolly.  I could go for a plate of brown jolly parmigiana right now.

Context, explanation, culture, and descriptive language generally make it clear what exactly is being discussed when a word like 'pepper' is used, and good ol' Google can usually help us figure out what the heck a British recipe means when it calls for capsicums and aubergines, but sometimes things do get genuinely confusing.  So it is with 'black beans.'  This recipe prominently features the powerful flavour of the fermented black soybean, known in Mandarin Chinese as douchi (pronounced DOH-chi, with the i sounding like the middle of the word 'shirt').  These are commonly called black beans, but they have absolutely NOTHING to do with the black beans you'll find in a burrito. They taste completely different because, well, they are completely different.  The black beans (aka black turtle beans) used in North/Central/South American and cooking are a variety of the common bean (Phaseolus vulgaris).  A similar bean called the black gram (Vigna mungo) is used in Indian food, and is sometimes replaced with the black turtle bean.  But neither bean has anything to do with douchi.  The Chinese black bean, which features prominently in black bean sauce and the dishes that revolve around it, is a salted and fermented black soybean (Glycine max).  If you've tasted these beans, you'll immediately understand the importance of avoiding confusion.  A Chinese dish made with black turtle beans would bare absolutely no resemblance to one made with douchi, while a burrito made with douchi would be pretty terrifyingly intense.

Bean confusion wasn't the only reason I decided to write about this topic today.  This entire dish is a mishmash of ingredients with variable and confusing names.  The snow peas, which are commonly confused with sugar/snap peas, are called mangetout in much of the English-speaking world. The dried citrus is frequently called orange peel, but is generally actually mandarin. But this whole issue of nomenclature takes a fairly serious turn when we look at the seafood.  I can't think of anything else we eat that's been so confusingly muddied up with inaccurate, insufficient, and even misleading names.  Consider shrimp - for many of us shrimp is just shrimp - a single food entity that warrants little further differentiation.  Nothing could be further from the truth.

Now before I get to far into this, let me be clear that I'm not just worried about semantics here; what we call our seafood really matters.  A recipe like this one might simply call for shrimp, leaving it up to the reader to decide on size and variety, but shrimp fishing is a gigantic industry ($50 billion per year globally) and not all harvesting is achieved responsibly.  The spot prawn (Pandalus platyceros) industry here in British Columbia is a paragon of sustainability, but its economic impact is a blip compared to the farmed shrimp industry, which focuses primarily on the Pacific white/whiteleg shrimp (Litopenaeus vannamei), giant tiger prawn (Penaeus monodon) and a handful of less significant species.  Spot prawns are delicious, but expensive, especially for a meal like this that doesn't really revolve around the shrimp alone. So should you buy farmed shrimp?  That depends very much on the shrimp - some operations are sustainable and ecologically sound while others are horribly destructive.  To make matters worse, one species might be raised responsibly in one place but not in another.  The Vancouver Aquarium's Oceanwise program lists information for 67 different species and/or harvesting methods (at last count) for consumers looking to make environmentally informed decisions. I'm only barely scratching the surface of this issue, but it rapidly becomes clear that a shrimp is not just a shrimp.

Of course I'm not suggesting that we start writing out recipes with scientific names, but I hope you'll believe me when I say that a name can be incredibly important.  The simple truth is that the language surrounding our food and its biology is often being obscured, and we as consumers and cooks need to start changing that. Marketing groups and retailers will explain that consumers don't want to be confused by their food, and their is some truth to that - I wouldn't be surprised if consumers balked at being presented with literally dozens of different species and harvesting methods while shopping for shrimp. But food culture is becoming more adventurous and global in its reach, and if that's going to happen sustainably then we need to open our minds to learning about ideas, and yes, new problems. But that awareness of new problems should not intimidate us - instead, we should feel empowered and involved. We develop deeper understandings of the world and its people when we expand our culinary horizons, but we have an undeniable impact when we reach beyond what we already know. Fortunately we have the ability to make that impact a positive one.

Stir-fried Shrimp and Clams with Snow Peas in a Citrus and Black Bean Sauce

Recipe Notes

If my discussion of shrimp has scared you off a little, this dish will also work beautifully with crab, lobster, or even a simple firm-fleshed white fish. You could also use more clams and omit the crustaceans entirely.

Most grocery store clams have been purged of sand and grit, so they should be fairly clean. If you're concerned, or you've obtained your own clams and you need to purge them, I strongly recommend a simple salt-water based method like the one used here. Despite what you might read elsewhere, there's no need to use cornmeal to clean clams.

The natural saltiness of the clams, black beans, and the soy sauces means that a conventional salt-added chicken stock can risk making this dish very salty. If you can't get a no-salt stock, I would recommend just using water, and possibly an extra tablespoon of clam broth.

As with many Chinese dishes, this one can still seem salty on its own, which is why it's at its best when served over rice or with noodles. A nice thin wheat noodle works well, but rice noodles should make a good accompaniment too.

Most of the ingredients needed for this recipe can be found in a well-stocked grocery store, but you'll probably need to seek out a Chinese grocery store for the douchi and mandarin peel. For what it's worth, store-bought mandarin peel is relatively easy to find, but even easier to make at home - simply wash and scrub a mandarin orange, then peel zest and a little bit of the pith with a vegetable peeler and allow it to dry. I like to toast mine in the oven just a little bit for an added flavour dimension.

Stir-fried Shrimp and Clams with Snow Peas in a Citrus and Black Bean Sauce

Note: nutritional information is shown for a single serving (1/4 total recipe) and does NOT include rice, noodles, etc.

Nutrition Facts
Shrimp and Clams in a Black Bean and Citrus Sauce
Amount Per Serving
Calories 305 Calories from Fat 72
% Daily Value*
Fat 8g12%
Saturated Fat 1g6%
Polyunsaturated Fat 3g
Monounsaturated Fat 2g
Cholesterol 205mg68%
Sodium 800mg35%
Potassium 715mg20%
Carbohydrates 13g4%
Fiber 1g4%
Sugar 3g3%
Protein 42g84%
Vitamin A 950IU19%
Vitamin C 63.5mg77%
Calcium 130mg13%
Iron 24.3mg135%
* Percent Daily Values are based on a 2000 calorie diet.

Nutritional Summary

High in protein and iron while still very low in fat, this dish demonstrates the wonderful nature of good seafood.

This is a bit high in sodium, and has the chance to be VERY high if you don't properly soak the douchi (black beans). Make sure to follow the directions carefully. This is also relatively high in cholesterol thanks to the shrimp.

If you do choose to serve this with a noodle, try to choose one that's low in sodium. Some packaged Asian noodles can be astonishingly salty.

Shrimp and Clams with Douchi (Chinese Black Beans) and Citrus -
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5 from 3 votes

Shrimp and Clams in a Black Bean and Citrus Sauce

Fermented black soybeans are one of the most distinctive flavours in Chinese cooking. Here, they're balanced beautifully by the bright taste of citrus.
Prep Time10 minutes
Cook Time15 minutes
Resting Time5 minutes
Total Time30 minutes
Course: Main Dishes
Cuisine: Asian, Chinese
Keyword: authentic, clams with black bean sauce, clams with chinese black bean sauce, easy, sustainable seafood
Servings: 6 people
Calories: 305kcal



  • 1/4 cup no-salt-added chicken stock (if unavailable, see note)
  • 1 tbsp light soy sauce
  • 2 tsp dark soy sauce
  • 1 tsp sugar
  • 2 tsp rice wine
  • 2 tsp rice vinegar
  • 1 tbsp corn starch
  • 1 4 inch piece dried orange/mandarin peel
  • 1 lemon zested and juiced

Stir Fry

  • 2 tbsp peanut oil or other neutral, high-smoke point oil
  • 450 g shrimp (31-40 count)
  • 900 g Manila clams or little neck clams
  • 200 g snow peas trimmed and halved
  • 2 tbsp clam broth (this will come from boiling the clams)
  • 1/4 cup douchi (fermented black beans)
  • 3 cloves garlic
  • 15 g ginger (~1.5 inch thumb) peeled and finely shredded


  • Combine all the sauce ingredients and set aside.
  • Rinse the clams in cold water and scrub off any dirt or grime. Discard any pieces of shell and any open clams.
  • Fill a large pot with about 2.5 cm (~1 inch) water. Bring to a boil, then add the clams and cover the pot with a lid. Simmer for about 7 minutes, then check the clams. If most of the clams are open, turn off the heat and remove the clams with a slotted spoon and set aside. If many of them are still closed, put the lid back on and steam for another 3-4 minutes. Don't wait for every clam to open up, as this will overcook them. The few unopened ones should relax after being removed from heat, but if they remain very tightly closed, discard them. Reserve the clam broth.
  • Place the fermented black beans in a bowl of cold water and let them stand for 5 minutes. Drain the water, then rinse the beans 2 more times with fresh water to remove much of their saltiness. Set them aside in a strainer or on a paper towel to dry.
  • Heat a wok (or large, heavy-bottomed pan) over high heat for 30 seconds. Add the oil and swirl to coat the bottom of the wok. When the oil is shimmering and very hot, add the ginger and garlic and stir fry for 30 seconds. Add the shrimp and stir fry until the shrimp are pink on the surface but not cooked through.
  • Remove the semi-cooked mixture and return the wok to the stove to allow it to become hot again. Add the snow peas and stir fry for 30-45 seconds, or until they look a vibrant green. Add the snow peas to the shrimp.
  • Return the wok to the stove and add the sauce, clam broth, and black beans. Once the sauce is boiling, return all of the other ingredients and the clams. Mix the ingredients well, ensuring that the sauce coats the clams. Cook for 2-3 minutes, or until the shrimp is just about cooked through (do not overcook them - they will continue to cook from the residual heat once removed from the wok).
  • Serve immediately, ideally with noodles or rice to soak up the sauce.


The natural saltiness of the clams, black beans, and the soy sauces means that a conventional salt-added chicken stock can risk making this dish very salty. If you can't get a no-salt stock, I would recommend just using water, and possibly an extra tablespoon of clam broth. Doing so also makes the meal pescetarian.
As with many Chinese dishes, this one can still seem salty on its own, which is why it's at its best when served over rice or with noodles. A nice thin wheat noodle works well, but rice noodles should make a good accompaniment too.


Calories: 305kcal | Carbohydrates: 13g | Protein: 42g | Fat: 8g | Saturated Fat: 1g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 2g | Cholesterol: 205mg | Sodium: 800mg | Potassium: 715mg | Fiber: 1g | Sugar: 3g | Vitamin A: 950IU | Vitamin C: 63.5mg | Calcium: 130mg | Iron: 24.3mg

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  1. Great post, Sean! With marketers slapping so many labels on the food we buy, it’s easy to get overwhelmed. It’s so important to educate ourselves so that we’re able to buy as conscientiously, as possible.

    1. Author

      Absolutely. I think that we’re being told that consumers don’t want to be confused… but the simple reality is that we are confused (we just don’t know it). I’m very sympathetic to the idea that this can all be overwhelming – I’ve been a teacher and educator for years and that overwhelming feeling is a big obstacle to be dealt with. I try to maintain a positive outlook about it all the time though, as I want people to feel like they can be involved and part of a better food future.

  2. I love clams in black bean sauce and this twist on a classic Chinese dish sounds fresh and delicious! I can’t wait to try it.

    1. Author

      I do too Stephanie! It’s a great classic, but I really do love how the citrus lifts the bold taste of the beans.

  3. Wow, Litopenaeus vannamei? What a name! This looks like a great dish, Sean! If you are ever looking to try something different, you can use the douchi to stirfry dried anchovy fish and firm tofu, the taste is amazing!

    1. Author

      Thanks Angela! That anchovy dish sounds really different, and really good! I’ve got a bag of iriko (Japanese dried sardines) in the pantry, so I might just have to give that a shot! Cheers!

  4. You haven’t scared me off at all with your “shrimp talk!” We are big fans of BC’s sustainable spot prawns and we are lucky enough to be able to harvest them ourselves just minutes from our home. This recipe looks fabulous. I’m on the hunt for douchi now.

    1. Author

      Thanks Elaine! I’m a little jealous of your prawn situation. I moved to BC just in time to fall in love with spot prawns… and then to watch their price skyrocket. I’d love to get into crabbing/shrimping/fishing in general here. If you do partner them with douchi, I hope you’ll let me know!

  5. I loved this post! In chef school my chefs always said “Sh*t in, sh*t out.” What’s scary about the food industry is that they make labels hard to understand and there for hard for consumers to make wise choices. Continually pointing this out will help change it eventually. The recipe looks delicious!

    1. Author

      Heh, that’s an old saying that I’m quite fond of myself. I know that there’s some impressively complicated food out there, but the majority of great cooking revolves around giving great ingredients their due. You could easily slop black bean sauce into some cooked clams to approximate this dish (or the more traditional Chinese dish on which it’s based), but you lose something with every layer of processing that you add to your dish. Sadly, the industry pushes so many heavily processed foods on us in the name of convenience, causing us to end up with sub-par foods and little faith in our own cooking skills. More transparency is certainly needed… and more home-cooking!

  6. As soon as I saw this dish I loved it! Clams are my favorite seafood ever, had them countless times and never purged them with cornmeal but exactly like you said. I’ve never had them in a black bean sauce, though, and now you tickled my curiosity. And I love your writing!

    1. Author

      Thank you so much for the compliment! It’s always so easy to second-guess yourself when you’re writing, and it’s wonderful to know that people are enjoying it. I love clams too (though the ratio of clam-to-shell by weight always makes me a little leery) , and clams with black beans are a major Chinese classic. I hope you’ll give it a try!

  7. First off, this recipe looks delicious. I love all seafood…everything. Well, maybe not plankton which I was introduced to a few years back. Another story. Fantastically written and education overload! Makes my blog post look fluffy like a 4th grader had written them….lol. Re the shrimp…I think it is very important to understand where our seafood comes from and if you can buy locally or even from your own country…better. I live in Southern Spain in a seaside town and boasts it’s seafood. The local markets and supermarkets always have locally caught seafood and fish. So, when I see fish from say, Japan, I keep walking. I didn’t need clams today anyway. But if more people bought locally, things would be different in a much better way. I am aware sometimes this isn’t possible. I am from Newfoundland originally and if you want a fresh mango…well it just may have to come from Mexico. However, there are many sustainable things we can all do improve and make things better. I started out just to say it looks delicious!

    1. Author

      Plankton eh? Well hey, I’m always up for new gastronomic experiences.

      I’m glad you think this looks good! I actually grew up in a family of picky seafood eaters (shrimp were on the menu, clams definitely were not), but I adore seafood, so I’m always looking to make new things and try new dishes. I’m also really glad you like the educational tilt – after all, that’s a big part of what I want Diversivore to be about. But you’re definitely not writing fluff! You’ve got beautiful, healthy food on your site, and if more people ate like that, I wouldn’t need to write half the stuff I do! You’re lucky to live in a part of the world with a history of (and love for) great seafood. I would imagine that it makes for more discerning consumers, and that’s so important!

      Thanks for coming by, and I’m so glad you like it!

  8. I never realized that asparagus was a scientific name. You have enlightened me! I have never tried cooking clams at home before. But as my family has penchants for both Asian sauces and seafood, I look forward to tasting this dish soon!

    1. Author

      It’s one of those words that straddles the line between common and scientific usage. There are actually lots of them (though most of the examples I know aren’t food). My favorite example is the Gorilla. Its scientific names is Gorilla gorilla. The Western Lowland Gorilla subspecies is Gorilla gorilla gorilla. I love that so much.

      I’m glad you like the recipe – I do hope you’ll try it! Let me know how it goes!

  9. This sounds incredible, Sean! I always love what you cook up over here as these Asian influenced flavour profiles are some of my favourites. I learn so much from your posts too — scientific names and the language behind food are so interesting. I eat a plant based diet but I do eat meat occasionally. I feel like it’s such an feat to source from ethically raised and sustainable sources (especially seafood, here in Alberta) which is a part of the reason why I eat mostly meatless anyway! There are a few local shops I rely on here but honestly it can be exhausting. Anyway… the combination of black bean sauce and citrus sounds divine — pinning for later!

    1. Author

      Thank you so much Justine! I’m going to make food from all over the world, but you can bet that I’ll come back to Asian ingredients and recipes over and over again. I just love the flavours and techniques so much!

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