kǔsè de yúwèi

bitter aftertaste

The Chinese term '苦涩的余味' is used to describe the lingering taste in the mouth that is unpleasant and has a sharp or harsh flavor, often felt after consuming certain foods or beverages like coffee or some wines. This phrase is commonly used in culinary contexts to indicate a flavor that remains after swallowing and can evoke a sense of dissatisfaction in tasting experiences.