Coffee knowledge points: varieties, roasting, brewing methods, caffeine content, etc.

Coffee Varieties

Coffee is a beverage made from coffee beans, which come in many different varieties. The two most common varieties are Arabica and Robusta. Arabica beans are generally considered to be of higher quality and have a milder taste, while Robusta has a higher caffeine content and a stronger bitter flavor.

Coffee roasting

Roasting is heating the raw coffee beans to a certain temperature to change their color, aroma and taste. According to the different degrees of roasting, there are three types of roasting: light roasting, medium roasting and dark roasting. Light roasting usually retains the original flavor and has the characteristics of high acidity, lightness and freshness; medium roasting increases sweetness and balance while retaining part of the original flavor; dark roasting makes the surface of the beans produce oil and brings a rich bittersweet flavor.

Brewing method

The brewing method has an important impact on the taste and flavor of coffee. Here are some common brewing methods:

1. Drip coffee: Put the ground coffee powder into the filter paper, slowly pour hot water to filter, and get a light-tasting coffee.

2. French press: Mix coarsely ground coffee beans with water, let them soak for a while, and then use pressure to separate the liquid through the filter to get a rich and mellow coffee.

3. Espresso: A small but extremely rich and organically rich liquid is extracted from finely ground coffee beans using a high-pressure machine.

Caffeine Content

Different varieties and processing methods will result in different levels of caffeine content. Generally speaking, Robusta varieties have higher content than Arabica varieties. In addition, under the same variety, dark roasting usually causes the beans to release some or most of the caffeine originally present in them, so dark roasted coffee is usually relatively low.

It should be noted that individual differences also lead to different levels of sensitivity to caffeine. Generally speaking, drinking coffee in moderation will not have a negative impact on most people, but excessive intake may cause insomnia, palpitations and other problems.

Conclusion

By understanding coffee varieties, roasting degree, brewing methods, caffeine content and other knowledge points, we can better choose and enjoy our favorite coffee. Whether you pursue a delicate taste or a rich and mellow flavor, you can choose according to your preferences. At the same time, while enjoying the delicious taste, you should also pay attention to drinking in moderation and adjust the intake according to individual circumstances.