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Sorrel: beneficial properties, contraindications, and culinary tips

Sorrel: Health Benefits, Contraindications, and Cooking Tips

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  • Sorrel has significant nutritional value, as it contains many beneficial substances. It is rich in vitamins, especially vitamin C, which helps strengthen the immune system. Sorrel also contains B vitamins, as well as minerals such as potassium, magnesium, and iron.

    This green leafy vegetable is also a source of fiber, which has a positive effect on digestion. Furthermore, sorrel contains oxalic acid, which in large quantities can interfere with calcium absorption, so its consumption is recommended to be limited by people with certain medical conditions. Overall, sorrel can be considered a valuable addition to the diet due to its low calorie content and high nutrient content.

  • What are its benefits?
  • Sorrel is not recommended for people with certain medical conditions. First and foremost, it should be avoided by those suffering from kidney disease, as this product contains high levels of oxalates, which can lead to the formation of stones. Also, sorrel should not be included in the diet of those with gastrointestinal disorders, such as gastritis with high acidity or peptic ulcers, as it can exacerbate these conditions. Pregnant and nursing women should exercise caution with this plant, as its health effects in these cases have not been sufficiently studied. In general, before adding sorrel to your menu, it is best to consult a specialist, especially if you have chronic diseases.
  • Sorrel is a versatile plant that can be used in a variety of dishes. Here are some ideas for using it in the kitchen.

    1. Sorrel soup. To make it, you'll need fresh sorrel leaves, potatoes, carrots, and onions. Start by chopping the vegetables and frying the onions and carrots in vegetable oil. Then add the potatoes, cover with water, and cook until tender. Finally, add the sorrel and let the soup simmer for a few more minutes. Season with salt and pepper to taste.

    2. Sorrel pie. For the dough, use a ready-made or homemade crust. The filling is sorrel, eggs, and cottage cheese. Pre-blanch the sorrel leaves in boiling water to remove the bitterness, then mix them with beaten eggs and cottage cheese. Spread the filling on the dough, cover with a second layer, and bake until golden brown.

    3. Sorrel salad. Take fresh sorrel leaves, add cucumbers, radishes, and herbs. Dress with olive oil and lemon juice. This salad will be refreshing and healthy.

    4. Sorrel sauce. Grind the sorrel in a blender with garlic, nuts, and olive oil. The resulting mixture can be used as a pasta sauce or as a spread on bread.

    5. Sorrel garnish. Fry the sorrel leaves in a frying pan with a little oil, adding a little garlic and seasoning to taste. This dish makes a great complement to meat or fish appetizers.

    These simple recipes will help diversify your menu and enjoy the taste of sorrel in different ways.

  • Cooking and using sorrel can be easy if you know a few helpful tips. First, it is important to choose the right sorrel: fresh and young leaves with a bright green color are best suited for cooking. It's also worth checking that the leaves are free of spots or signs of wilting.

    Before cooking sorrel, rinse it thoroughly to remove any sand or dirt. Some chefs recommend trimming off any tough stems, as they can impart a bitter taste. After this, the leaves can be chopped or left whole, depending on the dish you're preparing.

    Sorrel pairs well with other ingredients, such as potatoes, eggs, meat, and fish. One popular way to use it is in soups, where it's added at the end of cooking to preserve its freshness and vibrant flavor. Sorrel can also be used raw in salads, adding it to impart not only a piquant flavor but also a tart note.

    For those who prefer canned sorrel, it can be frozen, allowing it to be preserved for a long time. Frozen leaves retain most of their nutrients and can be used any time of year. To avoid loss of flavor, it's important to pack sorrel properly, removing excess air.

    Keep in mind that sorrel is high in oxalic acid, so people with kidney disease or other health problems should limit its consumption. However, in moderation, this green vegetable can be an excellent addition to the diet, enriching it with vitamins and minerals.

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Nutritional Properties of Sorrel

Sorrel is a close relative of buckwheat. Both plants belong to the buckwheat family, but sorrel leaves have a sharp and sour taste due to the presence of oxalic acid. Although this plant cannot be considered a superfood, it certainly offers more benefits than many other leafy vegetables.

Sorrel has been officially accepted into the Korean Food Code, which has been approved by the Ministry of Food and Drug Safety of South Korea. Various parts of this plant are used to make dietary supplements and functional foods.

According to information provided by the United States Department of Agriculture, one cup of raw sorrel, which is equivalent to 133 grams, contains:

What are the benefits of sorrel?

Sorrel is widely used in folk medicine in Eastern countries [4]. It can also be a useful product for improving overall well-being and enriching the diet. Let's consider the benefits of sorrel.

Sorrel can provide about 70% of the daily requirement of vitamin C, which is necessary for the normal functioning of the body in the following way:

  • protect yourself from harmful microorganisms,
  • speed up the recovery process after physical exertion,
  • promote the production of collagen in the skin, joint tissues and gums [5], [6].

Read also:

22 Foods High in Vitamin C

Some of the most effective antioxidants found in sorrel include phenolic acids, flavonoids, triterpenes, carotenoids, and anthraquinones. These substances play an important role in protecting cells because they can neutralize dangerous free radicals. Antioxidants, in turn, have a preventive effect on the development of various chronic diseases, such as cardiovascular pathologies and type 2 diabetes.

No, sorrel does not have the ability to remove toxins from the body. In addition, its effect on ulcers has not yet been confirmed [8]. However, this plant can help with diarrhea and help normalize stool in case of constipation. Sorrel is also believed to contain components with antibacterial, antiviral, and antifungal properties [10].

It is believed that sorrel extract helps increase the amount of nitric oxide in the arteries, which is the main substance that causes vasodilation. In addition, this plant contains significant amounts of potassium. According to information published in the British Medical Journal, consuming high doses of potassium can reduce the risk of stroke by 24%.

Sorrel contains significant amounts of beta-carotene, which serves as a precursor to vitamin A. Eating one serving of this plant allows you to satisfy 30% of the daily requirement of vitamin A. In the retina of the eye, this vitamin binds to the colorless protein opsin, forming rhodopsin, a key photopigment found in rods. It plays an important role in the perception of light in low light. If the body lacks vitamin A, the process of rhodopsin restoration is disrupted, which can lead to the so-called "night blindness".

Read also:

15 foods high in vitamin A

One bowl of sorrel contains 18% of the recommended daily intake of iron. Insufficient iron levels in the body can lead to iron deficiency anemia (IDA), which poses a serious threat to everyone, but especially to pregnant women and children.

People who should avoid eating sorrel

Some time ago, scientists expressed the opinion that sorrel leaves can be a profitable and affordable source of plant protein. However, this plant has been found to contain an antinutrient compound - oxalic acid, also known as oxalate. This substance can impair the absorption of certain nutrients, in other words, it prevents their effective absorption. However, there are more compelling reasons to avoid consuming foods containing oxalate.

Medical experts advise avoiding sorrel if a person has the following conditions:

  • Urolithiasis is a condition in which oxalates are actively excreted in the urine. However, when they bind with calcium, these substances can crystallize. Small oxalate crystals are usually easily eliminated from the urinary tract, but this is only possible with adequate fluid intake. If urine volume decreases, oxalates can aggregate, which eventually leads to the formation of larger, harder crystals known as kidney stones. Approximately 80% of all kidney stones are oxalates. Therefore, people suffering from urolithiasis are advised to avoid sorrel.
  • During an exacerbation of diseases of the pancreas, stomach, and intestines, it is recommended to temporarily exclude sorrel from the diet.
  • Calcium deficiency. When calcium combines with oxalic acid, its ability to benefit the body is reduced, and it is quickly excreted. If the diet contains insufficient dairy products or is deficient in vitamin D, sorrel may contribute to accelerated bone loss.

Sorrel is not recommended for those taking antibiotics. In the large intestine, some oxalates from food are broken down by intestinal bacteria, including Oxalobacter formigenes. These microorganisms use oxalates as an energy source, which benefits the host organism. However, antibiotic use significantly reduces the number of these bacteria. A single course of antibiotics can reduce O. formigenes colonization by 60–70%, and this effect can last up to six months.

Safe Ways to Consume Sorrel

Instead of completely avoiding foods containing oxalates, such as sorrel, consider the following options:

  • Cook sorrel in water. Cooking can reduce oxalate levels in this plant by 30–87%.
  • Make sure you are drinking enough water. It is recommended to drink at least two liters daily, and in some cases more.
  • Pay attention to your calcium intake. Include dairy products in your diet, as the body absorbs this mineral from them more easily.

Read also:

There are more than twenty products that are high in calcium.

Culinary possibilities of sorrel: ideas for

When it comes to cooking with sorrel, traditional green borscht most often comes to mind. However, there are many alternative recipes that can add variety to your menu.

From a culinary perspective, sorrel can be considered something between a vegetable and a herb. With its distinctive sour flavor, it's ideal for:

  • salads or salad dressings;
  • soups, sandwiches, or stews;
  • raw, like lettuce or spinach.

If you're looking for something sophisticated, try pairing a flavorful creamy sauce with sorrel dressing.

In France, sorrel sauce, known as "quick French sauce," is popular with fish.

Cooking the leaves reduces their lemon flavor, but they still make a wonderful complement to fish dishes.

Of course, such a sauce will be quite high in calories, and you can’t afford it too often. If you are on a diet, you should avoid cream and butter. However, you can create a delicious dressing using sorrel.

To make a light sorrel and basil dressing, combine a handful of sorrel leaves with an equal amount of basil leaves. Add half a cup of olive oil and a quarter cup of apple cider vinegar. Don't forget to season the mixture with salt and pepper. This flavorful dressing can be used to garnish fresh salad leaves or pour over grilled fish.

Additional recommendations for your convenience

  • Drying sorrel leaves is not recommended, but they can be frozen.
  • Young, not yet mature leaves and shoots have a delicate flavor, making them ideal for adding to salads and sandwiches. At the same time, mature leaves are more often cooked and used in soups, stews, or sauces.
  • Include sorrel in recipes at the very end of cooking, as prolonged heat can negatively affect its taste and appearance.
  • When cooking sorrel, avoid using aluminum or cast iron cookware, as the metal can react with oxalic acid and create an unpleasant metallic taste in the dish. If possible, choose ceramic cookware.

Sources

1. Sorrel. Encyclopedia Britannica.

2. Legally Permitted Food Materials in Korea. 1Library.

3. Sorrel (sorrel), raw. U.S. Department of Agriculture.

Jeong D., Irfan M., Lee D., Hong S., Oh J., and Rhee M. H. investigated the effects of Rumex acetosa on platelet function and its ability to prevent blood clots in rats. The article was published in BMC Complementary Medicine and Therapies in 2020, volume 20, issue 1. DOI: 10.1186/s12906-020-02889-5.

Vitamin C - Fact Sheet for Health Professionals. National Institutes of Health.

Carr, A. and Maggini, S. Investigation of the effect of vitamin C on immune functions. Journal of Nutrients, 2017, Volume 9, Issue 11, Article 1211. DOI: 10.3390/nu9111211.

Vasas, A., Orbán-Gyapai, O., and Hohmann, J. conducted a review of the genus Rumex, examining its traditional uses, phytochemical properties, and pharmacology. This work was published in the journal Ethnopharmacology in 2015, Volume 175, pages 198–228. DOI: 10.1016/j.jep.2015.09.001.

Expand list

Bello O., Fasinu P., Bello O., Ogbesejana A., Adetunji C., Dada A., Ibitoye O., Aloko S., and Oguntoye O. present a review on the wild vegetable Rumex acetosa Linn., examining its ethnobotanical aspects, pharmacological properties, and phytochemical composition. The article was published in the South African Journal of Botany in 2019, issue 125, pages 149–160. DOI: 10.1016/j.sajb.2019.04.018.

Ali, S. S., Ahsan, H., Zia, M. K., Siddiqui, T., and Khan, F. H. Understanding oxidants and antioxidants: A classic team with new members. Journal of Food Biochemistry. 2020; 44(3). DOI: 10.1111/jfbc.13145.

Lima, M. a. S. S., Fontanetti, A., Soares, M. R., Gazaffi, R., De França Guimarães, N., and De Souza Gallo, A. Studying vegetative development and nutrient acquisition in sorrel (Rumex acetosa L.). Journal of Agricultural Science. 2019; 11(4). 262. DOI: 10.5539/jas.v11n4p262.

Aburto, N. J., Hanson, S., Gutierrez, H., Hooper, L., Elliott, P., and Cappuccio, F. P. A systematic review and meta-analysis of the effects of increased potassium intake on cardiovascular risk factors and disease. BMJ. 2013. 346(apr03 3). f1378. DOI: 10.1136/bmj.f1378.

Rhodopsin. Encyclopedia Britannica.

Raju M., Varakumar S., Lakshminarayana R., Krishnakantha T., and Baskaran V. conducted a study on the carotenoid composition and vitamin A activity of medicinally important green leafy vegetables. This study was published in Food Chemistry in 2006, including volume 101, number 4, pages 1598–1605. DOI: 10.1016/j.foodchem.2006.04.015.

Sonoda K. Iron deficiency anemia: guidelines from the American Gastroenterological Association. American Family Physician. 2021; 104(2). 211–212.

Korpelainen, H., and Pietiläinen, M. investigate the weed sorrel (Rumex acetosa L.), considering it not only as an undesirable plant but also as a promising vegetable and medicinal plant. Their work is published in Botanical Review in 2020, Volume 86, Numbers 3–4, Pages 234–246. DOI: 10.1007/s12229-020-09225-z.

16. Mitchell, T., Kumar, P., Reddy, T., Wood, K. D., Knight, J., Assimos, D. G., and Holmes, R. P. Effect of dietary oxalate on kidney stone formation. AJP Renal Physiology. 2018. 316(3). F409–F413. DOI: 10.1152/ajprenal.00373.2018.

Chen, T., Qian, B., Zuo, J., Luo, P., Zuo, J., Li, W., Chen, C., and Zheng, L. Oxalate as a Potent Inducer of Kidney Stone Formation. Frontiers in Medicine. 2023. DOI: 10.3389/fmed.2023.1159616.

Spence, C., & Spence, S. «Weed Salad from the Garden»: A Seasonal Dish. International Journal of Gastronomy and Food Science. 2023. 33. 100776. DOI: 10.1016/j.ijgfs.2023.100776.

19. Oxalic acid. PubChem.

Dietology. Fourth edition / Edited by A. Yu. Baranovsky. St. Petersburg: Piter, 2012. 1024 pages.

Kaufman D. W., Kelly J. P., Kurhan G. S., Anderson T. E., Drettler S. P., Preminger G. M., and Cave D. R. in their study consider the possibility of reducing the likelihood of calcium oxalate kidney stone formation thanks to the bacterium Oxalobacter formigenes. This work was published in the Journal of the American Society of Nephrology in 2008, Volume 19, Issue 6, Pages 1197–1203. DOI: 10.1681/asn.2007101058.

Kharlamb V., Schelker J., Francois F., Jiang J., Holmes R. P., and Goldfarb D. S. conducted a study, the results of which showed that the use of oral antibiotics for the treatment of Helicobacter pylori leads to a persistent reduction in intestinal colonization by Oxalobacter formigenes bacteria. This work was published in the Journal of Endourology in 2011, Volume 25, Issue 11, Pages 1781–1785. DOI: 10.1089/end.2011.0243.

Salgado, N., Silva, M. A., Figueira, M. E., Costa, H. S., and Albuquerque, T. G. Investigation of oxalate in foods: extraction conditions, analytical techniques, prevalence, and health effects. Foods. 2023. 12(17). 3201. DOI: 10.3390/foods12173201.

Chai, W., & Liebman, M. (2005). The impact of various cooking techniques on the oxalate levels in vegetables. Journal of Agricultural and Food Chemistry, 53(8), 3027–3030. DOI: 10.1021/jf048128d.

Gul Z. and Monga M., in their article published in the Korean Journal of Urology in 2014, review medical and dietary approaches to preventing kidney stones. In volume 55, number 12, on page 775, they discuss various strategies aimed at preventing this condition. DOI: 10.4111/kju.2014.55.12.775.

Drake T. M., Gupta V. Considering calcium. [Updated January 8, 2024]. In: StatPearls [Internet]. Treasure Island, FL: StatPearls Publishing. January 2025.

27. Traditional French Sorrel Sauce. The Forager | Chef.

28. The Amazing Benefits of Sorrel. Organic Facts.

Selçuk, S. N., Gülhan, B., Düzova, A., and Teksham, O. Acute tubulointerstitial nephritis caused by excessive consumption of sorrel (Rumex acetosa). Clinical Toxicology. 2015. 53(5). 497. DOI: 10.3109/15563650.2015.1033061.

Tolra, R., Poschenrieder, C., Luppi, B., and Barcelo, J. (2004). Aluminum-induced changes in organic acid and phenolic compound profiles are the basis for aluminum tolerance in Rumex acetosa L. Ecological and Experimental Botany, 54(3), 231–238. DOI: 10.1016/j.envexpbot.2004.07.006.