What is the relationship between the roasting depth of coffee and the type of coffee beans?

Moderately roasted coffee has a moderate taste and a balanced sour and bitter taste, which is suitable for the taste of most people. The deep-baked coffee has a strong taste and a slightly bitter taste, which is suitable for buyers who like the rich taste.

Add: 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, Arabs began to bake and grind coffee beans. Because drinking was forbidden in the Koran, Arabs consumed a lot of coffee, so religion was actually a big factor in the popularity of coffee in the Arab world.