Which food ingredient was first commercially produced and marketed specifically to enhance umami flavor in packaged food products?

Product innovation in the food industry often relies on understanding flavor profiles. The discovery and commercialization of umami - the fifth basic taste - revolutionized product development in packaged foods. This 'savory' taste has ancient origins but modern applications. Test your knowledge about this game-changing flavor innovation that transformed countless food products worldwide.

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Monosodium glutamate (MSG)
Yeast extract
Soy sauce powder
Hydrolyzed vegetable protein