Indonesia

Indonesia spans an island chain where wet-hulled Sumatran and Sulawesi arabica, washed Java and Bali lots, and a large robusta crop all sit under one flag.

Indonesia was the world's fourth-largest coffee producer in 2025 and grows both major commercial species: roughly a quarter of its exports are arabica, with robusta making up the rest. Its coffee geography follows its volcanic archipelago rather than a single growing belt. Sumatra and Sulawesi are major arabica islands, Java's arabica centres on the Ijen Plateau estates, Bali contributes a small, geographically indicated arabica with a single annual harvest, and Lampung, South Sumatra and Bengkulu in the south together account for roughly half of national output and up to three-quarters of its robusta.

What sets Indonesian arabica apart from most origins is process as much as place. Most farmers on Sumatra, Sulawesi, Flores and Papua use *giling basah* ("wet hulling"): cherries are pulped, the mucilage-coated beans are stored for up to a day, the mucilage is washed off, and the coffee is partially dried and hulled in a semi-wet state, which gives a distinctive bluish-green bean. The process reduces acidity and increases body. Sumatran coffees are known for a smooth, sweet, balanced body, with cocoa, tobacco, smoke, earth and cedar notes that can show well in the cup. Sulawesi coffees are described as clean, with nutty or warm-spice notes, and Bali coffee, generally processed by the wet method, as sweet and soft with lemon and other citrus notes. Larger mills, estates and some cooperatives on Sumatra, Java, Sulawesi and Bali produce fully washed lots.

The Dutch governor in Malabar sent arabica seedlings from Yemen to Batavia in 1696. The first failed in a flood, and a second shipment followed in 1699. The first exports from Java reached Europe in 1711. From 1830 to around 1870 the colonial government forced farmers under the *cultuurstelsel* (cultivation system) to grow coffee, including in West Java's Preanger region, a profitable arrangement for the government but a hard one for growers. Coffee leaf rust swept Indonesia in 1876, wiping out most of the Typica arabica, and robusta was introduced to East Java in 1900 as a substitute. Dutch-owned plantations on Java were nationalised in the 1950s and are now managed as state plantations under PTPN. Indonesia is also the country most associated with kopi luwak, coffee from cherries eaten and excreted by the Asian palm civet, a product whose reputation sits uneasily alongside documented welfare problems on caged-civet farms (see trivia).

History

The Dutch governor in Malabar sent arabica seedlings from Yemen to the governor of Batavia in 1696. The first seedlings failed after flooding, and a second shipment in 1699 succeeded. The first export shipment reached Europe in 1711, reaching 2,000 pounds shipped in 1717. From 1830 to around 1870 the colonial government's *cultuurstelsel* (cultivation system) forced farmers, including in West Java's Preanger region, to grow coffee for the state, which was profitable for the colonial treasury but hard on growers. Coffee leaf rust swept the archipelago from 1876, destroying most Typica arabica. Robusta was introduced to East Java in 1900 as a substitute. Dutch-owned plantations on Java were nationalised in the 1950s and are now managed as state plantations under PTPN. Robusta reached smallholders around Kerinci around 1915 and spread across southern Sumatra during the 1920s, and coffee was first grown near Lake Toba in 1888. Bali's Kintamani arabica received Indonesia's first coffee geographical indication in 2008.