Sensory evaluation is influenced by human bias. Expectations based on origin, price, or reputation can alter perception. Sensory calibration aims to align tasters through shared reference standards and protocols.
Calibration involves repeated tasting of known samples, use of standardized descriptors, and blind cupping. This reduces variability between individuals and improves reliability of grading decisions.
Professional sensory programs treat perception as a skill that can be trained, measured, and improved rather than a purely subjective talent.