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Add MSG to a soup, file it under “natural flavor,” and the label is misbranded.
“Flavor enhancer,” “flavor modifier,” “flavor booster.” On a supplier sheet the three read as synonyms, yet each one leads to a different ingredient statement.
A flavor enhancer amplifies the taste a food already has without adding one of its own. MSG is the textbook case: US rules require monosodium glutamate to appear under its own name (21 CFR 101.22(h)(5)), and the EU treats it as a food additive, E621.
Modifiers reshape the profile instead, trimming bitterness or lifting fruitiness at a level where they taste of little on their own. Because they work as flavorings, they usually reach the label as “natural flavor” or “artificial flavor.”
Booster has no regulatory definition at all. It is a sales word, and the ingredient behind it could be either of the other two.
So the three terms differ in what they do to the label. An enhancer amplifies existing taste and is listed under its own name. A modifier reshapes the profile and is listed as flavor. A booster has no legal definition, so you have to find out what is behind it.
Regulators sort the first two by intended effect, so one molecule can land in both. EU guidance names neohesperidine DC as a modifier inside a flavoring, while the same substance holds separate approvals as an enhancer and as a sweetener. The word on the sheet only means something when the supplier gives the use level and the function with it.
Before accepting a “booster,” ask the supplier whether it goes on the label as flavor or under its own name, because that answer decides your ingredient statement.
Explore our flavor catalogue: https://aromatech-portfolio.vercel.app/index.html
