I have been growing Vietnamese Fish Mint (Houttuynia cordata) for years, yet for some reason I have never written a blog post on it before now.
This plant has many common names, including dokudami, 'poison blocking plant', lizard tail, heartleaf, fishwort, bishop's weed, and it has a heap of other common names too. I usually just call it 'fish mint'.
Vietnamese Fishmint is a perennial vegetable that not at all related to mint. It is edible and used as a vegetable or herb, it has a long history of medicinal use, as well as a long history as a remedy for poisoning.
This is an essential vegetable in Vietnamese cooking, and appears to be eaten extensively in South East Asia. This is very uncommon in Australia, yet extremely simple to grow and very productive.
Vietnamese fish mint in flower |
Fish mint has a strong and rather distinctive smell. Some people love the taste of fish mint, others not so much. Some people liken its smell to oranges, others think it smells like fish, to others it smells like the gravel in the bottom of a fish tank.
Vietnamese Fish Mint tends to be eaten raw, or only lightly cooked/wilted. It does taste a lot like fish sauce, and can be used to make a vegetarian fish sauce. When raw it tastes a bit too...I'm not sure how to explain it...perhaps too 'metallic' for my liking. Once slightly cooked I prefer the taste. Other people tell me they can't taste any of the metallic taste that I notice, so I guess it differs from person to person.
Fish mint can be used to make a Vegan Fish Sauce. Seriously! How cool is that. I found a recipe that I shared below, but if you have a better recipe and are willing to share it I would love to learn more.
It is also used to make a medicinal "dokudami" herbal tea. I have made this a few times, it tastes nice but I find the smell to be a little too strong for me. My kids have tried the herbal tea, they like it. I have made herbal tea using fish mint as well as other herbs such as lemon balm. This was nicer, but I still found the fish mint to be overpowering.
The rhizomes are used in a bunch of different herbal remedies, many of which have been proven to be effective. Unfortunately I don't know how to make these medicines. Presumably just eating the rhizome is enough to gain some benefit. I find the rhizomes to be less overpowering than the leaves.
Vietnamese Fish Mint |
Many animals, including chickens, quail, ducks, guinea pigs, sheep, and pigs gladly eat fish mint. It has a lot of nutrients and some medicinal benefit. Interestingly, fish mint has been demonstrated in many peer reviewed papers to protect chickens from bronchitis (https://pubmed.ncbi.nlm.nih.gov/21848486/), as well as treat coccidiosis in chickens and lambs as effectively as commercial coccidiosis medication. I am tempted to grow this in a hanging pot in the chicken run so the hens can get the benefits of an organic coccidiosis treatment.
There are several varieties of this plant. I grow the most vigorous green version with single flowers. There is a green one with double flowers, and there is also a multicoloured variegated one that looks really pretty and spreads less vigorously. I am told the green one is not only more vigorous, but also more potent. My chickens gladly eat the leaves, but I don't give them many, so I am glad I grow the most potent version.
The leaves of the variety I grow are green, heart shaped, and they look very similar to buckwheat leaves. The flowers are white and not overly interesting. Bees and other insects visit the flowers, but never seem overly keen on them. I am happy to say that the variety I grow never produces viable seed.
Fish mint on left, buckwheat on right |
I grow most of my fish mint in a container, and the container is on pavers. My main one is in a plastic tub that we drilled holes in, it's not very deep but it is wide to allow the plant to spread, but any plant pot would do. The rhizomes will try to escape through the drainage holes, but they can't cross the pavers.
I have been growing this plant for seven or eight years and it has never escaped on me. I also grow some in pots on wire shelves in my greenhouse, but these are being grown out to sell at markets and through the post.
Fish mint escaping it's pot |
Fishmint rhizomes potted up and ready to grow |
Vegan Fish Sauce Recipe
I found a recipe for vegan fish sauce here, it is so simple.
Ingredients: 1 cup packed fish mint leaves; 3 Thai chili peppers; 2 cloves garlic; 1/3 cup sesame oil; 2 tbsp rice wine vinegar
Instructions: Puree all ingredients in a food processor. Transfer to a bowl and serve.
Other Fish Mint Recipes
I also found a recipe for Fish mint that uses rhizomes as well as leaves. It also is very simple.
Ingredients: 1/4 cup shredded young fish mint leaves, 1/4 cup chopped fishmint rhizomes, 4 tablespoons soy sauce, 2 tablespoons rice vinegar, 1 tablespoon fried chili crisp or chilli oil, 1 tablespoon chopped coriander cilantro, 1 tablespoon chopped scallions.
Instructions: Combine all the ingredients and toss shredded fishmint leaves and rhizomes. Chill for 10 minutes before serving.
As well as another recipe that includes tofu.
Ingredients: 200 g fish mint stems, broken into 4 cm lengths (or lotus stems), 8 fried tofu cubes, 1 handful of chopped mint leaves, 1/2 cup coriander, roughly sliced, 1/2 cup garlic chives, roughly sliced, 1/2 cup red peppers, finely sliced
Dressing: 3 tbsp light soy, 2 tbsp black vinegar, 1 tbsp brown sugar, 2 spring onions, sliced, 1/2 tsp dried chilli flakes, 3 garlic cloves, diced, 4 cm piece of ginger, finely sliced.
Instructions: To make the dressing, in a bowl, combine the light soy sauce, black vinegar, brown sugar, spring onion, chilli flakes, garlic and ginger. Stir well and set aside for a few minutes to infuse.
In a large mixing bowl, combine the fish mint stems, tofu, mint, coriander, garlic chives and red peppers. Add the dressing and toss to combine. Transfer to a serving platter.
Vietnamese fish mint |
I mentioned earlier that this plant is vigorous, and I find the smell to be overpowering. Some people adore fish mint, so much so that they will drive an hour each way to pick up a plant from me.
I don't want to detract from the many benefits of this plant, so please read my opinion of its smell while keeping in mind that different people like different things, and that some people adore fish mint. Fish mint is also incredibly healthy to eat, both people and animals benefit from eating it, so please don't take my comments to mean that you should not grow and eat this.
I really can't cope with the smell of fish mint. It is too strong for me. Even repotting this can be too much for me at times.
Other people comment how they adore fish mint, and most people I sell it to rave about it. I had a few people drive out to buy fish mint plants from me cry tears of joy. They told me they cried because it is a taste of home, a very dear memory, and they were fearing that they would never be able to eat this again after moving to Australia.
While I don't think anyone should ever grow this in the garden do to how rampantly it spreads, I think this is well worth growing to see if you like it. If you like the taste it is increadbly healthy to eat. I also know that this plant makes a cherished gift to Vietnamese or Chinese friends.
This plant is very useful for making Vietnamese spring rolls, Pho, and dokudami herbal tea. People who buy this from me often say that they are thankful that they will never be without it again.