Recognizing coffee defects without treating every unusual note as a fault

A defect is an unwanted physical or sensory problem, rather than simply a flavor you do not personally enjoy. Problems can arise during harvesting, processing or storage, while brewing and equipment cleanliness can also complicate what you taste in the finished cup.

The source lists physical issues such as damaged or insect-affected beans alongside sensory descriptions including musty, stale, scorched or medicinal impressions. These categories should not be treated as interchangeable. A flavor observation by itself does not establish which production stage caused it.

If a coffee seems unexpectedly unpleasant, first check clean equipment, fresh water and a reasonable recipe. Compare another coffee prepared in the same setup if possible. Record the bag details and describe the specific observation when contacting the roaster. Avoid assigning a definitive defect from a single vague impression. A disciplined comparison helps distinguish a preparation problem, a damaged product and a deliberately unusual coffee style without pretending to perform a professional green-coffee inspection at home.