The difference between coffee powder and coffee beans in a standard latte cup

In a broad sense, there are two kinds of coffee beans in the world, Arabica beans and Robosta beans. The earliest Arab way to eat coffee was to chew the whole fruit (Coffee Cherry) to absorb its juice. They then mixed the ground coffee beans with animal fat as a physical supplement for long trips, and it was not until about 1000 AD that the green coffee beans were boiled in boiling water to make an aromatic drink. Three centuries later, the Arabs began to bake and grind coffee beans. Because drinking was strictly forbidden in the Koran, Arabs consumed a lot of coffee. So religion is also a big factor in the widespread popularity of coffee in the Arab world. Coffee powder is made from roasted coffee beans. It takes a lot of work to make a pot of delicious coffee. Coffee beans must be ground into fine powder. It is also best to use some kind of filter to keep the coffee grounds out of the cup, although people in many places like to drink unfiltered coffee powder. The difference between coffee powder and coffee beans is that coffee powder is more convenient than coffee beans. Because coffee beans to become mellow coffee still need to be roasted and ground into coffee powder. However, after the coffee beans are ground into powder, their surface area increases and absorbs moisture, which is easy to oxidize. In short, with the passage of time, coffee powder also plays a role of deterioration to damage the flavor. And after the ground coffee beans are placed, the carbon dioxide retained inside the beans will be lost together with the aroma. In this way, when the coffee powder is extracted and filtered, the coffee powder should be expanded without expansion, and you can't make delicious coffee anyway. The secret is to consider grinding and homework consistently, so brewing coffee is the most delicious and mellow.