Tahitian Spinach
In short
Summary of findings for quick reference
Tahitian spinach is a tropical leaf vegetable in the arum family, botanically Xanthosoma brasiliense (Desf.) Engl. According to Kew it is at home on the Caribbean islands and in northern South America, from Haiti and Puerto Rico to Colombia and Guyana. It does not come from Tahiti, and it is not related to garden spinach. The English name alone cannot identify it, because fafa, the taro leaf, is also called Tahitian spinach.
The cooked leaves and tender leaf stalks are eaten, in soups, stews and callaloo-style dishes. In Suriname and French Guiana the species is sold in markets, in the Antilles it has been on record as herbe à calalou since 1941, and in Kerala it counts as a leaf vegetable. All of that is food culture. The two laboratory papers on leaf extracts show no effect in people.
Never eat it raw, always cook leaves and stalks thoroughly, and drying alone does not replace cooking. Anyone with previous calcium oxalate kidney stones, a low-oxalate diet or reduced kidney function should agree portions with their own dietitian. The European Medicines Agency has no monograph on the plant, there is no authorised health claim, and the EU novel food catalogue has no entry for the species, so its food status in the EU is still open.
Clinical evidence ↔ Historical significanceWe display two separate evidence categories: clinical evidence from modern trials and historical significance from documented healing tradition. Both are valuable, but they answer different questions.Read more
In every encyclopedia entry we evaluate two distinct categories of evidence. Clinical evidence as used in trials meets a narrower but scientifically essential bar. At the same time, the hundreds of thousands of plant species worldwide have only partially been captured and tested in modern studies.
Alongside the trial picture our researchers compile a comprehensive overview of where and since when a plant has been used across different traditions of natural medicine. When a plant has been used as a medicinal plant in many cultures across many generations, that historical significance deserves to be visible too.
Our position: a truly informative overview emerges only when both categories sit side by side. We communicate transparently what counts as what.
Overview
Tahitian spinach, Xanthosoma brasiliense (Desf.) Engl., is a leaf vegetable in the arum family. Kew places its native range from the Caribbean to northern South America. In Suriname and French Guiana it is cultivated for its tender leaves and sold in markets. The leaves and leaf stalks are eaten cooked. It is unrelated to ordinary spinach.
The leaves and stalks must be thoroughly cooked, since raw or insufficiently cooked material can irritate the mouth and throat. The English name is ambiguous, because in French Polynesia fafa, the taro leaf, is also called Tahitian spinach. Measurements for taro or for other Xanthosoma species therefore do not apply to this species. There are no clinical studies of this leaf, only two laboratory papers on extracts.
History
The botanical names carry dates, the food culture for a long time did not. Desfontaines described the plant in 1829 as Caladium brasiliense, and Engler moved it to the genus Xanthosoma in Das Pflanzenreich in 1920. That shows how long botany has known the plant. How long it has been eaten is another question. Tareau and colleagues note that the taniers, the Xanthosoma species, are American in origin and were widely eaten in Central America and the Caribbean before Columbus. Their French name chou caraïbe, Caribbean cabbage, refers to that origin. For Xanthosoma brasiliense itself the dated trail begins later.
It begins in 1941. The botanist Haudricourt wrote then that this species is cultivated solely for its leaves, that the cooked leaves have a pronounced and very delicate flavour, that the other West Indian islands call it Indian kale, that the name chou caraïbe was first applied to this very plant, and that Guadeloupe calls it Z'herbe à calalou, after the stew called calalou. Tareau and colleagues quote the passage in 2026 and record today's names, zerbaj, herbage and herbe à calalou among the Creoles of the West Indies and butter blad among the Maroons of Suriname, because the leaf is so tender. In between sits a quite different note. Lans and colleagues recorded in 2001 that hunters in Trinidad mixed grated corms of Xanthosoma brasiliense and Xanthosoma undipes, called hog tannia, into their hunting dogs' food, because the needles in the leaf recall the bristles of the peccary, which eats these tubers itself. That is a hunting custom, not food for people.
Chandran and Lohidas describe the leaves as a vegetable in their papers on leaf material from Kerala and mention no Ayurvedic tradition. How and when the plant reached India is not documented. In French Guiana, according to Tareau, only the leaf is used and the underground parts are not eaten, whereas an Ecuadorian compilation from Zamora Chinchipe lists the corm as edible. Depending on the region, the same species is grown for its leaf or used for its corm.
Mechanism
The irritant chemistry of aroids matters for preparation. Their tissue can contain needle-shaped calcium oxalate crystals called raphides, and chewing raw plant parts can quickly cause burning, pain and swelling in the mouth. Studies in taro show that the irritation fades after cooking even though the crystals remain, and proteins attached to the crystals may be involved. For Xanthosoma brasiliense itself the mechanism has not been studied. The practical rule stays the same, cook leaves and stalks thoroughly and never eat them raw.
The Natural Product Research paper by Chandran and Lohidas examines leaf material and extracts in the laboratory. Its abstract reports carbohydrate at 0.41 ± 0.01 mg glucose equivalents, protein at 0.55 ± 0.02 mg bovine serum albumin equivalents and fibre at 12.0 ± 0.4 mg per gram dry weight, plus 0.16 per cent fat and 12.3 per cent ash in the dry matter. These are analytical measures, not a food composition table for a cooked serving, and they cannot be converted into a meal's protein share or a health benefit.
Research on this species is thin. Besides ethnobotanical reports there are two laboratory publications by Chandran and Lohidas from 2025. The abstract of their Natural Product Research paper names five phenolic compounds identified by HPLC, gallic acid, caffeic acid, rutin, quercetin and ferulic acid, and radical-scavenging assays with IC50 values of 1.818 mg/mL for DPPH and 0.506 mg/mL for ABTS. These are laboratory values for an extract. What a vegetable serving does in the body, they do not say. There are no clinical studies of this leaf.
Both papers also test whether leaf extracts inhibit alpha-amylase and alpha-glucosidase. The comparative paper in the Journal of Research ANGRAU uses ethanol extracts of shade-dried leaves with acarbose as the comparator. The authors speak of antidiabetic potential. Inhibition in a test tube does not tell whether eating the leaves changes blood glucose, and both papers come from the same team. A benefit in diabetes is not established.
Botanical identification matters when reading the research. Cocoyam, Xanthosoma sagittifolium, and taro, Colocasia esculenta, are different species, and reports under common names apply only to the species and plant part actually studied. The Ecuadorian paper by White and colleagues focuses its fieldwork mainly on Xanthosoma purpureomaculatum, and its compilation lists an edible Xanthosoma brasiliense corm from Zamora Chinchipe. That is a different plant part and not a clinical finding.
Evidence
| Outcome | Class | Grade | Effect | Studies |
|---|---|---|---|---|
| Everyday cooked leaf vegetableA living food use, documented in market surveys in Suriname and French Guiana, in reference works on tropical leaf vegetables and in records from the Antilles since 1941. This is kitchen and culture. No regulator indication and no health outcome is attached to it.Households in the Caribbean, the Guianas and South Asia | TraditionalTraditional use. Long-standing folk practice or EMA HMPC traditional-use monograph. | IEvidence quality grade I (Insufficient). Not enough evidence to draw a conclusion. More research needed. This is an evidence rating, not a product endorsement. | Traditional food use | |
| Laboratory composition of leaf materialThe Natural Product Research abstract reports analytical values for dried leaf material, protein in bovine serum albumin equivalents, carbohydrate in glucose equivalents, plus 12.3 per cent ash in the dry matter and 62 per cent moisture in the fresh leaf. This is a laboratory analysis, not a food composition table for cooked leaves, and it quantifies neither vitamins and minerals nor the protein share of a serving.Compositional analysis, no human outcome study | InsufficientInsufficient data. No reliable trials or traditional sources available. | IEvidence quality grade I (Insufficient). Not enough evidence to draw a conclusion. More research needed. This is an evidence rating, not a product endorsement. | Composition data only | |
| Radical scavenging in laboratory assaysThe Natural Product Research abstract by Chandran and Lohidas reports IC50 values of 1.818 mg/mL for DPPH and 0.506 mg/mL for ABTS, measured on a leaf extract in the laboratory. An antioxidant effect in people was not shown.In vitro assays (DPPH, ABTS) on leaf extract | InsufficientInsufficient data. No reliable trials or traditional sources available. | IEvidence quality grade I (Insufficient). Not enough evidence to draw a conclusion. More research needed. This is an evidence rating, not a product endorsement. | Laboratory assay only | |
| Inhibition of carbohydrate-digesting enzymes in the test tubeTwo 2025 publications by Chandran and Lohidas report that leaf extracts inhibit alpha-amylase and alpha-glucosidase in the laboratory, with acarbose as the comparator. The authors speak of antidiabetic potential. There is no clinical trial, and whether eating the leaves changes blood glucose has not been studied.In vitro enzyme assay (alpha-amylase, alpha-glucosidase) | InsufficientInsufficient data. No reliable trials or traditional sources available. | IEvidence quality grade I (Insufficient). Not enough evidence to draw a conclusion. More research needed. This is an evidence rating, not a product endorsement. | In vitro only, no human result | |
| Raw or undercooked leaf and acute mouth and throat irritationOne case report describes oral pain, drooling and swallowing difficulties in a man after leaves and roots of an elephant ear plant not identified to species. Another concerns severe injury in a woman after a concentrated Alocasia × amazonica root preparation. Both show the hazard of related aroids. For securely identified leaves of this species there is no such report. The rule stands, nothing raw and nothing half cooked.Case reports involving elephant ear aroids, without a securely identified case for this species | TraditionalTraditional use. Long-standing folk practice or EMA HMPC traditional-use monograph. | FEvidence quality grade F. Evidence of harm at typical dose. Use not recommended. This is an evidence rating, not a product endorsement. | Harm from the raw plant |
The studies that matter.
Ethnobotanical survey of edible leaves among people of African descent in French Guiana and Suriname, with market visits and interviews. Xanthosoma brasiliense appears in it as a species of its own, cultivated for its leaves and sold in markets, butter blad among the Maroons, zerbaj among the Creoles, with no use of the underground parts in French Guiana. The study documents food culture and names. As a field study of one region it is the strongest evidence for present-day use, and it tests no health effect.
Marc-Alexandre Tareau, Alexander M Greene, Clarisse Ansoe-Tareau, Nicholaas Pinas, Michael Rapinski. The Consumption of Edible Leaves by Afro-Descendants in French Guiana and Suriname: An Overview of a Constantly Evolving Ethno-Culinary Practice doi:10.3390/plants15132096Laboratory study of leaf material from Kerala. It measured nutrient composition, five phenolic compounds by HPLC, radical scavenging in DPPH and ABTS assays, and inhibition of alpha-amylase and alpha-glucosidase, which the authors report as matching acarbose. Everything took place in the test tube, and neither people nor animals were studied. The paper describes what the leaf contains and shows no effect from eating it.
Parvathy Chandran, J. Lohidas. Pioneering study on phytochemical, nutritional, antioxidant, and antidiabetic potential of Xanthosoma brasiliense (Desf.) Engl.: a key plant species from Kerala, India doi:10.1080/14786419.2025.2602915Laboratory analysis of leaves from four Colocasia esculenta cultivars and three Alocasia odora cultivars grown on nine farms in central Vietnam. Total oxalate ranged from 433.8 to 856.1 mg per 100 g fresh leaves, with 35 per cent soluble on average. Nothing was measured for Xanthosoma brasiliense, the figures only show the order of magnitude for related aroid leaves. It is an analysis of plant material.
Du Thanh Hang, Phan Vu Hai, Vu Van Hai, Le Duc Ngoan, Le Minh Tuan, Geoffrey Savage. Oxalate Content of Taro Leaves Grown in Central Vietnam doi:10.3390/foods6010002Laboratory work on taro, Colocasia esculenta, and its needle-shaped calcium oxalate crystals, the raphides. Building on earlier findings that the acridity of raw tissue disappears with cooking or protein-digesting enzymes although the crystals remain, the authors find proteins attached to the crystals, among them profilins, a known allergen family. That helps explain why cooking works in taro. For Xanthosoma brasiliense this has not been tested, so the paper supports the cooking rule and nothing more.
Robert E. Paull, Dessireé Zerpa-Catanho, Nancy J. Chen, Gail Uruu, Ching Man Jennifer Wai, Michael Kantar. Taro raphide-associated proteins: Allergens and crystal growth doi:10.1002/pld3.443
Usage
Forms and preparation
Use only correctly identified plants from a known food-crop source. Thoroughly cook the leaves and tender leaf stalks and eat them as a vegetable. The FAO database describes boiled leaves, leaves added to soups and chopped, boiled stalks, and stresses cooking the stalks especially thoroughly because their calcium oxalate crystals sting the mouth and throat. Do not taste any part raw, including for identification or as juice. There is no cooking time in minutes that holds for every variety and every kitchen, so an established preparation for this particular food crop is essential. Dried leaves or leaf powder are not established as ready to eat merely because they have been dried. They also require appropriate further preparation. Results from laboratory solvent extracts do not provide instructions for tea, extracts or supplements. Clean hands and utensils after handling raw plant material. Anyone who reacts to the sap should protect their skin and eyes from contact. Leaves and stalks need not go into the same dish. The FAO database describes cutting the stalks into pieces about 1 cm long, boiling them and serving them separately from the cooked leaves. It also mentions a little vinegar after cooking, or oil, butter and salt for seasoning. These are food-use details for this leaf vegetable, not a validated cooking time or instructions for similar-looking ornamentals.
Dosage
There is no medicinal dose for this plant. What is documented are the leaves as a vegetable and laboratory experiments with extracts, not a clinical intake. A vegetable serving is not a treatment dose, and the enzyme assays give no basis for dosing a powder or extract. The oxalate content of this species has not been measured. For comparison, a Vietnamese study found 433.8 to 856.1 mg total oxalate per 100 g fresh leaves across four Colocasia esculenta cultivars and three Alocasia odora cultivars, with 35 per cent soluble on average. Those figures apply to the species studied, not to Xanthosoma brasiliense or a cooked serving of it. Anyone who needs to restrict oxalate should agree portions with their dietitian and not make the leaf a daily staple without that advice.
Special populations
There are no clinical studies of this species in pregnancy, breastfeeding or children, and use as a vegetable says nothing about the safety of concentrated extracts in these groups. Never give children raw leaves or let them chew the plant. Anyone with calcium oxalate stones, a prescribed low-oxalate diet or reduced kidney function should follow individual dietary advice, and this page does not replace a medical recommendation.
Safety
Drug interactions
No interaction studies of this species exist, which does not rule interactions out. Calcium and oxalate binding in the gut is a dietary matter, not an established drug interaction of this leaf, and no general rule to separate calcium supplements from the meal follows from it. With kidney stones or a prescribed low-oxalate diet, agree foods and calcium supplements with your treating professional and do not change prescribed medicines or supplements on your own.
Contraindications
Raw or undercooked plant material of any part. It is not food, and it is a documented cause of acute mouth and throat injury. A history of calcium oxalate kidney stones, a prescribed low-oxalate diet, or reduced kidney function: keep portions modest and follow the dietary advice given by your own clinician. Known hypersensitivity to this plant or to other members of the arum family: avoid. There is no regulator list of contraindications for this species. The precautions here follow from preparation, from the irritant chemistry of related aroids and from individual dietary advice. A missing monograph is no assurance of safety.
Side effects
Eating raw or insufficiently cooked aroids can cause burning of the mouth and tongue, painful swallowing, drooling and swelling, and raw sap can irritate skin and eyes. The case reports do not involve clearly identified Xanthosoma brasiliense leaves, so the frequency and course of adverse effects in this species are unknown. Even the cooked vegetable is no guarantee that nothing will occur. Allergic reactions cannot be ruled out, and no species-specific reports exist. Stop eating and obtain medical advice if a reaction occurs.
Look-alikes
Similar plants and look-alikes
Taro leaf, also called Tahitian spinach in French Polynesia (Colocasia esculenta)
The shared English name can refer to different plants. In French Polynesia, fafa means taro leaves and is also translated as Tahitian spinach. Taro, Colocasia esculenta, belongs to a different genus. A similar leaf shape cannot safely identify a food plant. Both require appropriate preparation. Taro-leaf measurements do not automatically apply to Xanthosoma brasiliense.
Elephant ear and giant taro ornamentals (Alocasia species, including Alocasia x amazonica)
Alocasia sold as houseplants must not be confused with this leaf vegetable. Leaf shape and pale veins do not establish edibility. A case report describes a woman who drank a preparation made from grated Alocasia × amazonica root. She developed mucosal injuries and loss of voice, among other symptoms, and was discharged after twenty days in hospital. The report concerns a different plant and a concentrated preparation. Heating does not turn an unidentified ornamental into a food crop.
Cocoyam, tannia or malanga (Xanthosoma sagittifolium), the corm crop of the same genus
Xanthosoma sagittifolium, tannia or cocoyam, is a related species with its own literature on corms and leaves. Tareau and colleagues list it separately from Xanthosoma brasiliense. Their table places the names fey tayov, fey malanga, taya uwii and tajer blad under Xanthosoma sagittifolium. A shared trade name such as malanga cannot identify the species behind a measurement. The scientific name and the plant part actually examined are what matter.
Ornamental aroids sold as houseplants (Caladium, Dieffenbachia, Xanthosoma undipes)
Caladium and Dieffenbachia are grown as ornamentals and are not substitutes for this vegetable. Variegated leaf patterns may help orientation but establish neither identity nor edibility. Xanthosoma undipes must not be used merely because it shares the genus name. Tareau and colleagues found no food use of its leaves in their survey. Aroids can contain irritant substances. Children and pets should not chew plant parts, and unidentified ornamentals do not belong in the kitchen.
FAQs
Which part is used, and can it be eaten raw?
The cooked leaves and tender leaf stalks are used. Never eat them raw and do not rely on drying alone as a safety step. The small corm is outside the leaf-vegetable scope of this entry. Records of its use in other regions must be considered separately.
Why is it called Tahitian spinach if it comes from South America?
The English name is used for different plants. Kew places the native range of Xanthosoma brasiliense from the Caribbean to northern South America. In French Polynesia, fafa, the taro leaf, is also called Tahitian spinach in English. The name establishes neither botanical identity nor historical origin in Tahiti.
Is this the same plant as cocoyam or taro?
No. Xanthosoma brasiliense, tannia or cocoyam (Xanthosoma sagittifolium), and taro (Colocasia esculenta) are different species. A trade name alone cannot identify them. Nutrient or oxalate measurements for another species must not be read as values for this leaf.
Is it approved by the European regulator for any health use?
No. The European Medicines Agency has no monograph on Xanthosoma brasiliense, the EU register contains no authorised health claim for it, and the EU novel food catalogue has no entry for the species, only the corm of the related Xanthosoma sagittifolium as not novel. Laboratory enzyme inhibition is not a recognised indication and not evidence for treating diabetes.
Who should be careful with it?
Anyone with previous calcium oxalate stones, a low-oxalate diet or reduced kidney function should keep portions modest and follow individual dietary advice. The often-quoted 433.8 to 856.1 mg oxalate per 100 g fresh leaves comes from a study of Colocasia esculenta and Alocasia odora, not this species. Avoid it with known sensitivity to the plant or other aroids. Children must never chew raw plant parts.
How is it cooked?
Thoroughly cook the leaves and tender stalks, as boiled greens, in soups or in a stew. The FAO database describes cutting the stalks into pieces about 1 cm long and boiling them, and stresses cooking them especially thoroughly because their calcium oxalate crystals sting the mouth and throat. There is no cooking time in minutes that holds for every variety, so follow an established preparation from a kitchen that knows this plant. Use only correctly identified plants, never as a raw salad, raw juice or uncooked powder.
19 sources.
- Marc-Alexandre Tareau, Alexander M Greene, Clarisse Ansoe-Tareau, Nicholaas Pinas, Michael Rapinski. The Consumption of Edible Leaves by Afro-Descendants in French Guiana and Suriname: An Overview of a Constantly Evolving Ethno-Culinary Practice. 2026. doi:10.3390/plants15132096
- Cheryl Lans, Tisha Harper, Karla Georges, Elmo Bridgewater. Medicinal and ethnoveterinary remedies of hunters in Trinidad. 2001. doi:10.1186/1472-6882-1-10
- John Robert White, Sonia Zarrillo, Álvaro Monteros Altamirano, Marcia Peñafiel Cevallos, Roxana Tanguila, Andrea M. Cuéllar. Refocusing the study of human-plant relations to the genus scale: Indigenous selection pressures in Xanthosoma. 2026. doi:10.1186/s13002-026-00919-z
- Jordan C Malone, Anirudha Chatterjee, Keegan Colletier, Marc Shabot. The Elephant in the Room: Clinical Progression and Management of Elephant Ear Plant Toxicity in an Adult. 2024. doi:10.7759/cureus.66445
- Stanila Stoeva-Grigorova, Stela Dragomanova, Maya Radeva-Ilieva, Gabriela Kehayova, Simeonka Dimitrova, Simeon Marinov, Petko Marinov, Marieta Yovcheva, Diana Ivanova, Snezha Zlateva. Poisoning from Alocasia × amazonica Roots: A Case Report. 2025. doi:10.3390/toxins17040189
- Robert E. Paull, Dessireé Zerpa-Catanho, Nancy J. Chen, Gail Uruu, Ching Man Jennifer Wai, Michael Kantar. Taro raphide-associated proteins: Allergens and crystal growth. 2022. doi:10.1002/pld3.443
- Du Thanh Hang, Phan Vu Hai, Vu Van Hai, Le Duc Ngoan, Le Minh Tuan, Geoffrey Savage. Oxalate Content of Taro Leaves Grown in Central Vietnam. 2017. doi:10.3390/foods6010002
- Monia Zidane, Yen Ren, Constance Xhaard, Axelle Leufroy, Suzanne Côte, Eric Dewailly, Laurent Noël, Thierry Guérin, Patrick Bouisset, Solène Bernagout, John Paaoafaite, Jacques Iltis, Marc Taquet, Eric Suhas, Frédérique Rachédi, Jean Louis Boissin, Joseph Sebbag, Larrys Shan, Frédérique Bost-Beze, Patrice Petitdidier, Carole Rubino, Jacques Gardon, Florent de Vathaire. Non-Essential Trace Elements Dietary Exposure in French Polynesia: Intake Assessment, Nail Bio Monitoring and Thyroid Cancer Risk. 2019. doi:10.31557/APJCP.2019.20.2.355
- Parvathy Chandran, J. Lohidas. Pioneering study on phytochemical, nutritional, antioxidant, and antidiabetic potential of Xanthosoma brasiliense (Desf.) Engl.: a key plant species from Kerala, India. 2025. doi:10.1080/14786419.2025.2602915
- Parvathy Chandran, J. Lohidas. Antidiabetic potential of Xanthosoma brasiliense and Jacquemontia pentanthos: a comparative study. 2025. doi:10.58537/jorangrau.2025.53.2.02
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