It is decided that ─ coffee has four flavors and one fragrance.

Bitterness: caffeine, one of the basic flavor elements of coffee.

Sour taste: tannin acid, the second basic flavor element of coffee.

Rich alcohol: strong coffee, mellow taste.

Sweetness: when the sugar in the raw beans of coffee is partially coked after the baking process, the rest is sweet.

Fragrance (coffee aroma): fat, protein and sugar in raw beans of coffee are important sources of aroma.