A beverage made from roasted coffee beans; served hot or iced, black or with milk/sugar.
朝はいつもコーヒーを一杯飲んでから出かける。
I always have a cup of coffee in the morning before going out.
暑い日はアイスコーヒーが飲みたくなる。
On hot days I want to drink iced coffee.
あの喫茶店のコーヒーは豆の香りが強くておいしい。
The coffee at that café has a strong bean aroma and tastes good.