Java, Indonesia introduces the difference between Java and Sumatra coffee.

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Among the Asian coffee-producing countries, Indonesia is a very noteworthy one. Indonesia is an island country in the Indian Ocean, the islands are distributed on both sides of the equatorial line, of which three islands: Java, Sumatra and Sulawesi produce the world's important coffee. In the mid-17th century, the Dutch brought coffee trees to Ceylon (Sri Lanka) and Java, Indonesia. In the 18th century, Indonesia became a major producer of coffee, and almost all of its high-quality Arabica coffee was supplied to Europe. But by the 19th century, coffee rust, which appeared in Ceylon in 1869, also affected Indonesia. By 1877, most of the coffee fields on the Indonesian islands had been damaged by rust, and the Dutch had to import other coffee varieties from Africa, namely Romsda coffee. It is more resistant to diseases and insect pests, but its quality is inferior. About 90 per cent of Indonesian coffee is Romda beans, about 6.8 million bags a year, and less than 10 per cent of beans are Arabica coffee.

Coffee produced in Indonesia generally does not have the name "Indonesia", but directly bears the name of the island, such as Java, Sumatra and so on.

Java coffee is famous in the early years, which refers to Arabica coffee formerly grown on the island of Java. It has a strong aroma, low acidity, taste lubrication, mixed with mocha coffee, the resulting "Java mocha mixed coffee" was once popular and became synonymous with top coffee.

At that time, Java coffee sold to Europe was a very special kind of coffee. At that time, it was shipped to Europe and the United States by sailboat, and the distance was long and the speed was slow, so it took a lot of time to transport. In this case, the coffee seems to have undergone a special fermentation and has a very unique taste.

Later, when the ship replaced the sailboat, due to the shortened delivery time, people drank relatively fresh coffee beans. But people who are used to drinking Chen beans are not used to the fresh taste, so they desperately pursue old Java coffee, so that the Indonesian government and some businessmen deliberately store fresh beans in warehouses for one or two years and then sell them to consumers. In fact, compared with fresh beans, the acidity of aged Java beans is close to zero, but the flavor is more intense. Because of the long storage time, the increase in cost and the limited quantity, Java has always been a hot item in the coffee market. In the 1880s, some profiteers deliberately tampered with some fresh Guatemala or Venezuelan beans to mimic the high prices of old Java. It is intolerable that profiteers dye coffee beans to make them look more like old Java, but there is no doubt that the dyed chemicals are certainly toxic.

Java produces only a small amount of Arabica beans, most of which were imported from Africa after the rust disaster. This coffee has a strong bitter taste after roasting, but the aroma is extremely light. Although the acidity is low and the taste is delicate, it is rarely used for direct drinking. It is often used to mix mixed coffee or to make instant coffee.

Diseases and insect pests are really a powerful thing. It has greatly reduced coffee production in Brazil and repeatedly influenced the international coffee market. It has also made Sri Lanka, which used to plant coffee trees all over, cut down coffee trees and plant coffee instead. It also makes Java, which is rich in high-quality Arabica coffee, switch to Romsda coffee for fear of diseases and insect pests. Arabica Java coffee, which is regarded as a treasure, has been out of sight since then, and people's unlimited favor and pursuit of Java coffee has been lost ever since.