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E621: Monosodium glutamate

Also called: MSG, Sodium glutamate

Flavour enhancers

What it does

Boosts savoury (umami) flavour (stock cubes, crisps, instant noodles).

What it is made from

Made by fermenting sugars or starches (corn, sugar beet, sugar cane, tapioca).

Allergies and diets

Considered gluten-free because it is made by fermentation. A few people report sensitivity to it.

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General information, not medical advice. Sources differ between manufacturers: check the label or ask the maker.

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