"醇厚的咖啡"的英文表达方式可以是"rich coffee"或"full-bodied coffee"。

"Rich"是形容词,意思是"丰富的,富有的",常用来形容食物、饮料或其他东西味道浓郁或质地细腻。例如:

This coffee is rich and smooth. (这咖啡味道醇厚浓郁。)
The chocolate cake was rich and indulgent. (这个巧克力蛋糕味道浓郁诱人。)

"Full-bodied"也是形容词,意思是"体积丰满的,味道浓郁的",常用来形容咖啡或酒的口感。例如:

This full-bodied coffee has a deep, complex flavor. (这款咖啡体积丰满,味道深沉复杂。)
This red wine has a full-bodied taste with notes of black cherry and tobacco. (这款红酒味道浓郁,带有黑樱桃和烟草的香气。)

希望这些信息对您有帮助。