Consumer testing is the sensory evaluation of a food product by untrained panellists representing ordinary shoppers, capturing genuine gut reactions rather than expert analysis. Participants taste products, often blind and coded, rating liking, preference, and purchase intent, sometimes in central locations and sometimes at home. It answers the commercial question that laboratory panels cannot: will people actually buy and enjoy this? Proper design controls serving order, sample size, and demographics to keep results reliable. Combined with trained-panel descriptive work, consumer testing guides product development from concept to launch.