coffee是不可数名词。
coffee:n.(烘烤过的)咖啡豆;咖啡粉;咖啡(热饮料);一杯咖啡
Would you like milk or cream in your coffee?
你的咖啡里要牛奶还是奶油?
She made coffee for us all.
她给我们大家冲了咖啡。
I need a fix of coffee before I can face the day.
我总需要喝足咖啡才有精神应付一天的工作。