Well, sushi and Japanese cuisine, in general, tend to be packed with umami-rich sources such as fish, broth, shrimp, shiitake mushrooms… Even soy sauce! You'll be pleased to know that because Osaka's menu items offer natural glutamates from foods without the need for MSG. Osaka chefs explain the sensation of umami.

Masa (New York City) Masa isn't just the most expensive sushi restaurant in America — it is, arguably, the most expensive restaurant, period. (Not to mention one of the best.) The price for omakase is $750 per person not including beverages or tax; the Hinoki Counter Experience is $950 per person.