Jackfruit

Lore & Background

Jaca is derived from the Malayalam word chakka, recorded by Hendrik van Rheede in Hortus Malabaricus. Centuries later, botanist Ralph Randles Stewart suggested it was named after William Jack, a Scottish botanist. Nangka is another name used in Philippine English, from Tagalog and related to Cebuano and Malay. The jackfruit tree grows as an evergreen with a short trunk and dense treetop, reaching heights of 9 to 21 m. Its leaves are alternate and spirally arranged, with young trees having irregularly lobed edges and older trees rounded, dark green leaves. The inflorescences are formed on the trunk, branches, or twigs (cauliflory), and the tree is monoecious, with both female and male flowers. The fruit is a multiple fruit formed from the fusion of ovaries of multiple flowers, with a hard, gummy shell and small pimples. The fruit matures during the rainy season from July to August. The bean-shaped achenes are coated with a firm yellowish aril that has an intense sweet taste at maturity. When fully ripe, jackfruit has a strong aroma resembling pineapple and banana. The species has expanded excessively in some areas because its fruits are eaten by small mammals like the common marmoset and coati, which disperse the seeds.

Reader's Guide

The jackfruit is significant as the largest tree-borne fruit and a versatile food source in tropical regions. Its ripe fruit is sweet and used in desserts, while canned green jackfruit has a mild taste and meat-like texture, earning it the name 'vegetable meat.' Both ripe and unripe fruits are consumed in South and Southeast Asian cuisines. The fruit is available internationally canned or frozen, and in products such as noodles and chips. Ecologically, the jackfruit can become invasive, as seen in Brazil's Tijuca Forest National Park, where its spread has allowed marmoset and coati populations to expand, negatively impacting local birds. The tree requires minimal pruning, and stingless bees such as Tetragonula iridipennis are important pollinators. A three-way mutualism involving the flower, a fungus, and a species of gall midge (Clinidiplosis ultracrepidata) may also aid pollination. The jackfruit's name has a complex etymology, with roots in Portuguese, Malayalam, and Austronesian languages, reflecting its long history of cultivation and trade. Its ability to be used in both sweet and savory dishes, along with its large size and high yield, makes it a valuable crop in tropical agriculture.

Did You Know?

• The name 'jackfruit' comes from Portuguese jaca, derived from the Malayalam word chakka.
• Canned green jackfruit has a mild taste and meat-like texture, leading to it being called 'vegetable meat.'

Anatomy of the Tree

The jackfruit tree is an evergreen member of the Moraceae family, sharing its lineage with figs, mulberries, and breadfruit. It grows with a short trunk and dense canopy, reaching 30 to 69 feet in height with trunks 10 to 30 inches across. The smooth, reddish-brown bark releases a milky sap when injured, and the tree occasionally forms buttress roots. Leaves are arranged alternately in a spiral, thick and gummy. Younger trees show irregularly lobed margins, while mature specimens display rounded, dark green blades with smooth edges. Each blade spans roughly 7 to 15 inches long and 3 to 7 inches wide, with a prominent central vein and six to eight lateral nerves. One of the tree's most striking traits is cauliflory: inflorescences emerge directly from the trunk, branches, or twigs rather than from branch tips. The tree is monoecious, bearing both male and female flowers. Male blooms are greenish and hairy, with straight stamens tipped by small yellow anthers releasing pollen grains around 60 microns in diameter. Female flowers, also greenish, have a tubular hairy perianth and a fleshy base containing the ovary. The blooming period runs from December through February or March.

The World's Largest Tree-Borne Fruit

It is a multiple fruit: the fusion of ovaries from hundreds to thousands of individual flowers forms a single massive structure. The fruit hangs from a long, thick stem on the trunk, shifting from yellowish-green to yellow and finally yellowish-brown at maturity. Its hard, gummy shell is dotted with small pimples surrounded by hexagonal tubercles. Inside, a fibrous whitish core roughly 2 to 4 inches thick radiates into numerous fruit units about 4 inches long, each holding a bean-shaped achene roughly 1 inch in length. By weight, an average fruit breaks down to roughly 27 percent edible seed coat, 15 percent edible seeds, 20 percent white pulp, and 10 percent core. Ripening occurs during the rainy season, typically July through August. One practical challenge: cutting into the core releases a sticky milky liquid that resists soap and water, prompting street vendors in Tanzania to provide small bowls of kerosene so customers can clean their hands.

Culinary Versatility and Global Reach

The jackfruit tree thrives in tropical lowlands and is widely cultivated across South Asia, Southeast Asia, and Oceania, making the fruit a cornerstone of regional cuisines. Both the ripe and unripe stages are consumed, offering two distinct culinary profiles. Ripe jackfruit, whose sweetness varies by variety, is commonly featured in desserts. The unripe, green fruit tells a different story: when canned, it carries a mild flavor and a meat-like texture that has earned it the informal label "vegetable meat." This quality has made it a popular ingredient in savory dishes throughout South and Southeast Asian cooking. The fleshy petals of the unripe fruit are also eaten, adding another layer of versatility. Beyond fresh consumption, the jackfruit has achieved genuine international availability. It is sold canned, frozen, and incorporated into chilled prepared meals in markets around the world. Derived products extend the fruit's reach further, with jackfruit-based noodles and chips now part of the global snack and food landscape.

A Name with Centuries of Travel

The English word "jackfruit" carries a layered etymological history that mirrors the spice-trade routes of the early modern period. The Malayalam term was later documented by Hendrik van Rheede in the third volume of his Hortus Malabaricus, a text that Henry Yule subsequently translated as part of Jordanus Catalani's Mirabilia descripta. In the Philippines, the fruit is known as nangka, a borrowing from Tagalog that connects to nangkà in Cebuano and Malay, all rooted in the Austronesian language family.