
"Americans are familiar with the four primary tastes we've known since childhood: sweet, salty, bitter and sour. But the fifth taste -- the taste associated with savory things called umami -- has been less familiar. Umami is an earthy flavor foods get from amino acids in meats, some cheeses, fish and vegetables including mushrooms, ketchup, oysters, steak and sweet potatoes. It also gives food-additive MSG its allure.
<...>
"Umami is part of our everyday eating lives, it is just that many of us don't know what to call it. It is what gives depth of flavour to food. Every food culture has its umami-rich ingredients, whether it is seaweed in Japan or Parmesan in Italy."
<...>
Other foods that have umami flavor include: anchovies, Parmesan cheese, Worcestershire sauce and Marmite."