Introduction to the characteristics of grinding degree of Mexican coffee taste, roasting degree and brewing method

The Olmec civilization (Olmec) is the oldest known American civilization. It existed from about 1200 BC to 400 BC and is located in the rainforest of what is now south-central Mexico and is famous for its large head statues.

The Olmec civilization was born in the tropical jungles of the San Lorenzo Highlands of Central America around 1200 BC. San Lorenzo, the center of the early Olmec civilization, flourished for about 300 years and was destroyed by violence around 900 BC. The center of the Olmec civilization then moved to Raventa near the Gulf of Mexico. The Olmec civilization finally disappeared around 400 BC and was replaced by the Abbey Olmec culture. The exact reason for its disappearance is not known, but it has affected a large number of Central American civilizations. Many features of the Olmec civilization, such as the construction of pyramids and palaces, jade carving, jaguar and serpent worship, were also common elements of later Central American civilizations. Most scholars believe that Olmec civilization is the matrix of Mayan, Sapottek, Tiotihuakan and other civilizations. But some people think that the relationship between the Olmec civilization and other Central American civilizations is a sister relationship.

Mexican coffee-growing areas are mainly concentrated in the southeastern highlands, near Guatemala. Most of the mountains in the south are volcanic areas, and the volcanic ash soil is not only conducive to the drainage of coffee roots, but also provides sufficient nutrients for the growth of coffee trees. Most of the coffee varieties planted are Kaddura, Tibica, bourbon, etc., and the treatment methods are mostly water washing treatment, which are classified according to altitude.

Coffee beans are mainly exported to the United States, and about 70% of the coffee is exported directly to the United States, which is used as a large amount of industrial beans, making it a coffee plantation in the United States. However, Mexico's annual output is not proportional to its position in the coffee world. Although the output is large, there is a lack of some representative boutique coffee with outstanding quality. So when it comes to the level of understanding of Mexican coffee, most people, including myself, will feel relatively strange. When we taste and discuss beans from excellent producing areas of various countries, Mexican coffee exists awkwardly like an outsider.

But with a climate suitable for coffee growth, excellent coffee varieties, good soil and high-altitude planting areas, why is the quality of Mexican coffee not satisfactory?

A few days ago, when I went to Mexico, some colleagues jokingly called Mexico popcorn coffee. The quality of the raw beans exported by Mexico was not good, and the raw beans bought were sometimes mixed with a little corn and sand. If the corn is not picked clean and mixed with raw beans into the roaster, it will really become popcorn. But now the quality of raw beans exported from Mexico has been greatly improved, and the mixing of corn kernels has been a story for many years. Corn was cultivated by the ancient Indians of Mexico, so Mexico is known as the "hometown of corn", and corn is also the main crop in Mexico. Coffee in the drying process is not fine enough to mix with corn kernels. This explains why corn is mixed with corn. From this matter, it is not difficult to find that the root cause of the unsatisfactory overall quality of Mexican coffee lies in the follow-up production processing. From the harvest, treatment, grading, packaging and transportation of coffee fruits, unreasonable operation will lead to the loss of good flavor.