Chaya: what it is, benefits and uses of Maya spinach

What is it?

Chaya (Cnidoscolus aconitifolius), known as 'Maya spinach', is a Mesoamerican shrub whose large, lobed dark-green leaves are eaten cooked as an essential nutritious vegetable. It belongs to the Euphorbiaceae family and grows on the Yucatán Peninsula: Yucatán, Campeche and Quintana Roo, where it is cultivated in yards, backyards and Maya family gardens. It is also found in Tabasco, Chiapas and tropical areas of Central America. Its leaves have a mild earthy flavour similar to spinach with notes of intense green leaves. It is a key ingredient of Yucatecan dishes: eggs with chaya, chaya water with lime, chaya tamales with beans, chaya soup, brazo de reina, chaya with egg (a traditional breakfast) and the famous Yucatecan chaya tacos. Its exceptional nutritional profile makes it one of the most studied pre-Hispanic superfoods of Mexico.

Origin and history

Chaya has Mesoamerican origins and was domesticated by the Maya peoples since pre-Hispanic times. Its name comes from the Yucatec Maya 'chay' or 'chaya', and it was a fundamental part of the traditional Maya plot alongside achiote, jicama, chayote and other family-garden crops. The ancient Maya considered it a sacred food and ate it daily; codices and colonial chronicles record its use. Cnidoscolus aconitifolius belongs to the Euphorbiaceae family, the same as cassava, and its domestication led to the selection of spineless varieties (chaya mansa) that are easier to handle than the wild one with stinging trichomes. The UNAM Digital Library of Mexican Traditional Medicine documents its medicinal uses: treatment of diabetes, circulatory problems, anaemia and kidney stones. Larousse Cocina records it as an essential herb of the Yucatecan recipe book. Recent studies by institutions such as UADY have confirmed its exceptional nutritional value, positioning it as one of the most complete vegetables in Mexico.

Characteristic ingredients

Chaya is a perennial shrub 2 to 6 metres tall, with green succulent stems, large palmate leaves with 5 deep dark-green lobes and small white flowers in terminal cymes. There are two main varieties: chaya mansa (spineless, easier to handle, the most widely cultivated) and chaya brava (with stinging trichomes on leaves and stems). The raw leaves contain small amounts of cyanogenic glycosides that release hydrocyanic acid, so they must ALWAYS be cooked for at least 5 minutes before being eaten to deactivate these compounds. Once cooked they are completely safe. Its nutritional profile is exceptional: plant proteins, calcium (more than spinach), iron, phosphorus, potassium, vitamin A, vitamin C, vitamin K, folic acid, fibre and antioxidants. They are eaten boiled, sautéed with onion and achiote, in tamales, in soups, in fresh waters blended with pineapple or lime, in the filling of brazo de reina (a large Yucatecan tamal), and in patties with egg. Its nutritional profile surpasses that of spinach, broccoli and many other leafy vegetables.

Cultural significance

Chaya is one of the most living symbols of contemporary Yucatecan Maya cuisine. It forms part of the everyday recipe book of Yucatecan homes and appears in some of the state's most emblematic dishes: brazo de reina (a large chaya tamal with pumpkin seed and boiled egg), chaya escabeche, eggs with chaya, dzotobichay (a small tamal with masa, chaya and pumpkin seed), chaya tacos with cheese, and the famous chaya water with lime sold in eateries and restaurants. SADER recognises chaya as a priority crop for nutritional diversification and the conservation of Maya biocultural heritage. The Autonomous University of Yucatán (UADY) and other institutions have carried out research on its hypoglycaemic and nutritional properties. It forms part of traditional Mexican cuisine declared Intangible Heritage of Humanity by UNESCO in 2010, with emphasis on Yucatecan cuisine. Its consumption retains a fundamental cultural value for Maya communities and a health value recognised by contemporary medicine. Chaya is also a symbol of Maya food sustainability.

Frequently asked questions

What is the difference between chaya and spinach?

Although chaya is known as 'Maya spinach', they are botanically distinct plants. Spinach (Spinacia oleracea) is native to Asia, an annual herbaceous plant of the Amaranthaceae family. Chaya (Cnidoscolus aconitifolius) is a Mesoamerican perennial shrub of the Euphorbiaceae family. Chaya has a richer nutritional profile than spinach and, unlike it, must always be cooked before being eaten.

What does chaya taste like?

It has a mild vegetal, earthy flavour, similar to a more intense spinach with notes of broccoli and mature green leaves. Cooked, it is tender, slightly creamy and very aromatic. It pairs especially well with achiote, lime, egg, black beans, fresh cheese and Yucatecan spices. In a fresh water with lime and sugar it is refreshing and revealing, with a characteristic vegetal sweetness.

How is chaya cooked?

It is ALWAYS cooked before being eaten (at least 5 minutes) to deactivate the cyanogenic glycosides. It is boiled, sautéed with onion, garlic and achiote, added to tamales (brazo de reina, dzotobichay), to soups, to scrambled eggs with chaya, to tacos with cheese. Chaya water is made by briefly boiling the leaves, blending them with water, lime and sugar. It is never eaten raw.

Where does chaya come from?

Chaya is native to Mesoamerica, particularly the Yucatán Peninsula and tropical areas of Central America. It was domesticated by the ancient Maya since pre-Hispanic times and its name comes from the Yucatec Maya 'chay'. Today it is grown mainly in Yucatán, Campeche and Quintana Roo, as well as Tabasco, Chiapas and Central American countries where it forms part of the Maya and mestizo family garden.