In fact, coffee beans not only have acidity and bitterness, but also other flavors such as sweetness, floral and fruity, nutty and chocolate. Generally speaking, the lighter the roast, the more pronounced the acidity of the coffee beans and the lighter the bitterness. The deeper the roast, the lighter the acidity of the coffee beans, or even no acidity. Conversely, the heavier the bitterness. Different countries, production regions, varieties, altitudes, soils, and processing methods will bring different flavors. Each person has different tastes, so there is no good or bad, so try more and you will find your own taste.