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Since its doors opened Monday, the lines have been down the block, with wait times up to three and a half hours.
What makes the burgers so special?
"Umami" means "fifth sense," that indescribable taste that adds to every flavor.
The menu has something for everyone, from sweet and savory toppings to vegetarian options for non-meat eaters.
A fan of Umami Burger from my days living in Los Angeles, I knew I had to try the New York location the moment it opened. Here's how it stacked up against the original.