E621: Monosodium glutamate (MSG)
Flavour enhancer. Origin: Plant-based.
Vegan
Yes, vegan
Halal
Generally halal
The honest version
Made by fermenting plant sugars such as molasses and starch, not from animals. Vegan and halal despite its reputation; the debate around MSG is about sensitivity, not source.
Related additives
Classifications reflect common manufacturing practice and mainstream certifier positions; individual products and certifiers can differ. Not medical, nutritional or religious advice.