Yerba mate evokes South America: a shared gourd, a metal straw and the distinctive bitter, grassy flavour of an infusion made from Ilex paraguariensis. This traditional drink contains caffeine and is enjoyed in many different ways.
Mate is not tea
Unlike black, green and white tea, mate does not come from Camellia sinensis. It is made from the leaves of Ilex paraguariensis, an evergreen tree in the holly family. It is native to South America and is cultivated in Argentina, Brazil, Paraguay and Uruguay. The dried leaves contain caffeine, theobromine and a range of plant polyphenols.
Mate and South American traditions
The word mate refers to the drinking vessel, traditionally a hollowed-out gourd. A bombilla is the metal drinking straw with a filter at one end. Indigenous Guaraní communities were among the earliest users of yerba mate, and the practice remains central to social life in several South American countries.
Sharing mate can be an expression of friendship and hospitality. In some traditions a single gourd is passed around a circle. The preparation ritual is as important as the drink itself.
A naturally caffeinated infusion
Mate can produce the stimulating effects associated with caffeine, much as coffee and tea do. The term “mateine” is sometimes used, but it is not a separate form of caffeine. The effect depends on serving size, strength and individual tolerance.
Although mate contains polyphenols, it should not be presented as a proven treatment for headaches, anxiety or other medical conditions. Claims that it supplies “energy without a crash” or reliably improves cognitive performance cannot be guaranteed for everyone.
Antioxidants and nutritional claims
Yerba mate contains naturally occurring polyphenols. Laboratory measurements of antioxidant activity cannot, by themselves, establish a specific health benefit in people. As with other infusions, mate may simply be enjoyed as part of a varied diet.
Can yerba mate help with weight management?
Mate is often associated with slimming and “detox” products. Caffeine may temporarily influence alertness and energy expenditure, but mate is not an established weight-loss treatment and cannot replace balanced eating or physical activity. The body's natural waste-removal processes do not need a special tea to function.
How to prepare a mate infusion
- Allow approximately 1 tablespoon of dried yerba mate per cup, or around 4 tablespoons per litre, adjusting to taste.
- Place the leaves in cool water and warm gently until just before simmering, or infuse them in hot but not boiling water.
- Cover and leave for about 5 minutes.
- Strain and enjoy warm or chilled; refrigerate any prepared infusion and consume promptly.
For a traditional preparation, put mate into a gourd and slowly top up with warm water, sipping through a bombilla. Water that is excessively hot can spoil the flavour and cause burns.
Precautions
Mate contains caffeine. People sensitive to stimulants, and those who are pregnant or breastfeeding, should seek appropriate advice on caffeine intake. Avoid drinking it at scalding temperatures. If you take medicines or have a medical condition, consult an appropriate healthcare professional before using mate for any purported therapeutic purpose.
Further reading
The French source article references books on medicinal plants, their contraindications and nutrition. Those references are historical reading suggestions, not clinical evidence for the claims sometimes made about mate.
Further details from the original Chabiothé guide
Botany: the leaves of a South American holly
Yerba mate comes from Ilex paraguariensis, a member of the holly family, rather than from the tea plant Camellia sinensis. The shrub or small tree may reach roughly four to ten metres, bears small whitish flowers and produces red berries reminiscent of other hollies. It is grown especially in Brazil, Argentina, Paraguay and Uruguay. The dried, crushed leaves are used for the infusion; their natural constituents include caffeine, theobromine, phenolic acids and flavonoids. Describing these compounds is different from claiming that drinking mate cures an illness.
Gourd, bombilla and the sharing ritual
In the account given in our French article, the word mate evokes the traditional drinking gourd. The drink is prepared with dried leaves in a hollow calabash and drunk through a metal straw, the bombilla, which has a filter at its lower end. The Guaraní peoples are closely associated with the drink's history. Across South America, sharing a vessel is still an expression of hospitality: the gourd may pass from one person to another, including in the social traditions of the gauchos of the pampas.
Stimulation and the claims sometimes made about mate
Because it contains caffeine, mate can feel energising, much as coffee or tea can. The term “mateine” is sometimes used in popular writing, but it is not a distinct chemical substance from caffeine. The original French article also discusses antioxidants, digestion, appetite and weight management, and even compares the antioxidant content of mate with green tea. Such comparisons depend on the products and measurement methods; they should not be read as proof that mate prevents disease, removes toxins or produces meaningful weight loss. Mate can be part of an enjoyable daily routine, but no individual infusion replaces balanced food, sleep or medical care.
Preparing mate without a traditional gourd
- Measure approximately one tablespoon of dried leaves for one cup; the French recipe suggests four tablespoons for one litre.
- Put the leaves in the desired amount of cold water so that they begin to rehydrate gradually.
- Heat gently, stopping around the point when the water starts to simmer instead of boiling vigorously.
- Cover and leave for roughly five minutes before straining.
- Serve plain or adapt to your taste. A tea strainer works perfectly well if you do not own a gourd and bombilla.
The French guide advises particular care for pregnant or breastfeeding people, anyone sensitive to caffeine, and those experiencing nervousness or iron-deficiency concerns. Tannins may interfere with iron absorption when such drinks are taken with meals. If you are under medical treatment or have an underlying condition, ask a healthcare professional about regular use. Very hot beverages should be allowed to cool before drinking.
Books mentioned by the French author: Le petit Larousse des plantes qui guérissent by François Couplan and Gérard Debuigne; Michel Dubray's guide to herbal contraindications; and Maigrir sain sans faire de régime by Hélène Lemaire. They are listed as the author's references, not as independent clinical verification.