Why is Yunnan small coffee covered with white foam after being brewed with water?

Why is Yunnan small coffee covered with white foam after being brewed with water?

The Yunnan Coffee Trading Center of Pu'er is located in the main coffee producing area in China, and its trump card is close to the coffee producing area. it is understood that in recent years, the local coffee industry has been vigorously developed as an important support for the construction of a national green economy test and demonstration zone. the important content of the development of agriculture with plateau characteristics, as well as the characteristic backbone industries that drive farmers to increase their income and become rich. At present, the total area of coffee planting in the city has reached more than 700,000 mu, the output has reached 49500 tons, and the industrial and agricultural output value has reached 1.7 billion yuan. Therefore, it has become the core coffee producing area and coffee trade distribution center with the largest planting area, the highest yield and the best quality in the country. Pu'er has been named "Coffee Capital of China" by China Fruit Circulation Association.

At present, Kunming's trump card is to make use of the major channels in Southeast Asia and South Asia to attract coffee transactions in the surrounding producing areas. Yun Tianhua joined the construction of the coffee trading center, mainly relying on Yun Tianhua's influence in Southeast Asia and South Asia in recent years to introduce coffee from major coffee producing areas such as Vietnam and Indonesia to trade in Kunming. Behind the competition of the exchange, the essence is the competition between the pricing power and the interests behind.

The direct purpose of establishing an exchange is to form a market mechanism of commodity prices through centralized trading. Once this price becomes authoritative, the coffee companies involved can only accept such pricing. There is no doubt that all parties involved in the establishment of a coffee exchange hope that this generation mechanism will be under their own control. Pu'er City currently has a total coffee planting area of 716000 mu and a coffee output of 45000 tons, ranking first in the province in terms of planting area and output. There are 386 coffee enterprises registered for industry and commerce in the city. Nestl é and Starbucks have been stationed in Pu'er for a long time to carry out business cooperation, and coffee industry groups such as Aishi, Beigui, Kangenbei, Manya, Manlaojiang and other coffee industry groups have emerged, with more than 240000 coffee employees. At present, international coffee companies such as Nestl é, Starbucks, McDonnell, Kraft, Ikam and Louis Dave have set up coffee purchasing stations or centers in Pu'er. Coffee produced in Lincang, Baoshan, Dehong, Xishuangbanna, Honghe and Laos, Myanmar and other countries are mainly traded in Pu'er.