For thousands of years, there have been four basic tastes recognized across cultures. But thanks to Kumiko Ninomiya (a.k.a. the Umami Mama), scientists finally accepted a fifth. So could there be even more?
This is the fourth episode of our six-part series, Making Sense.
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Making Sense: The Umami Mama | Unexplainable podcast - Listen or read transcript on Metacast
