{"@context":"https://schema.org","@type":"TechArticle","id":"PR-SENS-001","slug":"sensory-analysis","canonical_url":"https://flavorotor.com/research/sensory-analysis","machine_readable_url":"https://flavorotor.com/research/data/chapters/sensory-analysis.json","markdown_url":"https://flavorotor.com/research/markdown/sensory-analysis","title":"Sensory analysis","description":"A staged sensory programme that separates detectable difference, descriptive profile and consumer preference.","chapter":"Research methods","version":"1.1","updated":"2026-07-26","table_of_contents":[{"id":"questions","label":"Three different questions"},{"id":"triangle","label":"Triangle test"},{"id":"general","label":"General controls"},{"id":"sample-size","label":"Sample size"},{"id":"hospitality","label":"Hospitality validation"}],"html":"<section aria-label=\"Article summary\" class=\"fr-article-summary\"><div><span>In brief</span><p>A staged sensory programme that separates detectable difference, descriptive profile and consumer preference.</p></div></section><h2 id=\"questions\">Three different questions</h2>\n<div class=\"table-wrap\"><table><thead><tr><th>Stage</th><th>Question</th><th>Method</th></tr></thead><tbody><tr><td>Difference</td><td>Can assessors detect that samples differ?</td><td>triangle test or other discrimination test</td></tr><tr><td>Description</td><td>How do they differ?</td><td>trained descriptive vocabulary and intensity ratings</td></tr><tr><td>Preference</td><td>Which is liked or preferred?</td><td>consumer/target-user hedonic or paired-preference study</td></tr></tbody></table></div>\n<h2 id=\"triangle\">Triangle test</h2>\n<p>ISO 4120 defines the triangle test: three coded samples are presented, two identical and one different, and the assessor identifies the odd sample. <button aria-label=\"Open source record R25\" class=\"research-source-trigger\" data-research-source=\"R25\" type=\"button\">[R25]</button> It establishes a perceptible difference, not which sample is better.</p>\n<h2 id=\"general\">General controls</h2>\n<p>Sample coding, order randomisation, serving amount, temperature, preparation, palate cleansing, assessor eligibility, blinding and analysis follow a written protocol consistent with general ISO sensory guidance. <button aria-label=\"Open source record R29\" class=\"research-source-trigger\" data-research-source=\"R29\" type=\"button\">[R29]</button></p>\n<h2 id=\"sample-size\">Sample size</h2>\n<p>Panel size is calculated from the selected test, significance level, desired power and minimum proportion of discriminators. It is not fixed at an arbitrary universal number.</p>\n<h2 id=\"hospitality\">Hospitality validation</h2>\n<p>Chef or venue feedback is collected only after analytical and blinded difference testing. Expert endorsement is useful for application relevance but does not replace controlled sensory evidence.</p>","text":"In brief A staged sensory programme that separates detectable difference, descriptive profile and consumer preference. Three different questions Stage Question Method Difference Can assessors detect that samples differ? triangle test or other discrimination test Description How do they differ? trained descriptive vocabulary and intensity ratings Preference Which is liked or preferred? consumer/target-user hedonic or paired-preference study Triangle test ISO 4120 defines the triangle test: three coded samples are presented, two identical and one different, and the assessor identifies the odd sample. [R25] It establishes a perceptible difference, not which sample is better. General controls Sample coding, order randomisation, serving amount, temperature, preparation, palate cleansing, assessor eligibility, blinding and analysis follow a written protocol consistent with general ISO sensory guidance. [R29] Sample size Panel size is calculated from the selected test, significance level, desired power and minimum proportion of discriminators. It is not fixed at an arbitrary universal number. Hospitality validation Chef or venue feedback is collected only after analytical and blinded difference testing. Expert endorsement is useful for application relevance but does not replace controlled sensory evidence.","source_ids":["R25","R29"],"visuals":[],"sources":[{"id":"R25","authors":"International Organization for Standardization","year":2021,"title":"ISO 4120:2021 Sensory analysis — Methodology — Triangle test","publication":"ISO","doi":null,"source_type":"standard","relevance":"Defines the triangle test for determining whether a perceptible sensory difference exists.","verification":"Official ISO record checked 2026-07-26; ISO 4120:2021 was confirmed in 2026.","url":"https://www.iso.org/standard/76666.html","verified_on":"2026-07-26","verification_status":"OFFICIAL RECORD CHECKED","verified_against":"Official ISO catalogue record"},{"id":"R29","authors":"International Organization for Standardization","year":2017,"title":"ISO 6658:2017 Sensory analysis — Methodology — General guidance","publication":"ISO","doi":null,"source_type":"standard","relevance":"Provides general sensory-analysis planning, sample presentation and interpretation guidance.","verification":"Official ISO record checked 2026-07-26; ISO 6658:2017 was confirmed in 2024.","url":"https://www.iso.org/standard/65519.html","verified_on":"2026-07-26","verification_status":"OFFICIAL RECORD CHECKED","verified_against":"Official ISO catalogue record"}]}