The following techniques can be used:

Discriminative tests
Paired Comparison tests
Triangle tests
Duo-Trio tests
Ranking tests

Descriptive tests
Rating/Scoring analysis
Taste Profile analysis
Quantitative descriptive analysis

Hedonic tests
Preference tests

Analytical and psychophysical methods
Taste Dilution Analysis (TDA)
Comparative Taste Dilution Analysis (cTDA)
Threshold determinations
Isointensity experiments
Dose/Response functions
Reconstitution experiments
Omission experiments