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Flavour enhancers are commonly added to commercially produced food products (eg. frozen dinners, instant soups, snackfoods) to make them taste more 'savoury'.

The commonly used flavour enhancers are:

[edit] Australian

• 621 monosodium glutamate, MSG
• 622 monopotassium glutamate
• 623 calcium diglutamate
• 624 monoammonium glutamate
• 625 magnesium diglutamate

[edit] European (by E number)

• E620 Glutamic acid
• E621 Monosodium glutamate, MSG
• E622 Monopotassium glutamate
• E623 Calcium diglutamate
• E624 Monoammonium glutamate
• E625 Magnesium diglutamate
• E626 Guanylic acid
• E627 Disodium guanylate, sodium guanylate
• E628 Dipotassium guanylate
• E629 Calcium guanylate
• E630 Inosinic acid
• E631 Disodium inosinate
• E632 Dipotassium inosinate
• E633 Calcium inosinate
• E634 Calcium 5'-ribonucleotides
• E635 Disodium 5'-ribonucleotides
• E636 Maltol
• E637 Ethyl maltol
• E640 Glycine and its sodium salt
• E641 L-Leucine