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The quality of coffee beans

We know that more than 90% of the coffee beans on the market are grown from the following two kinds of coffee beans: Arabica (CoffeaArabica) and Robusta (CaffeaRobusta).

Coffee trees planted in Arabica are suitable for planting on fertile hillsides with good drainage at an altitude of about 1000 to 2000 meters. During the day, they like mild but not very hot temperatures and less than two hours of direct sunshine every day. If there is a lack of afternoon thunderstorms or thick fog to report to the mountains every day, farmers have to plant many taller trees in the coffee garden to shade and prevent frost.

At night, they want to have an environment that is cold to about ten degrees Celsius but not too low, because? Too warm will cause the coffee berries to grow too fast to produce small, strong, hard, high-quality coffee beans, but if it is too cold to frost, the coffee trees will freeze to death.

The conditions for its cultivation are very strict, so Arabica coffee produced in different regions, different elevations and different climatic areas usually has its own characteristics. It smells like grass when it is not roasted, and after proper roasting, it shows "fruity" (medium-shallow roasting) and "caramel sweetness" (deep roasting).

The coffee trees planted by Robusta can grow on flat land about 200 to 300 meters above sea level. their leaves and flowers are slightly different from those of Arabica, and wild trees are on average one or two meters taller than Arabica. It has strong resistance to disease and high temperature, and its yield is also high.

Generally speaking, the flavor of Robusta beans is poor, sour and rigid, and the flavor produced by different regions and climates does not vary much. when it is not baked, it smells like raw peanuts. The taste after baking is usually between "wheat tea" (medium baking) and "rubber tire flavor" (deep baking), so it is difficult to show meticulous flavor. So its price is only half that of Arabica beans.

Because of the cost, instant coffee of course chooses Robusta coffee, which is produced in Vietnam, Hainan, Yunnan and some African countries. In addition, broken beans, bad beans and maldeveloped varieties are often baked and ground directly without screening. Anyway, it is only the extraction of caffeine, and the lack of aroma can be reconciled by all kinds of flavors and additives, which results in the poor quality of coffee beans that make instant coffee.