Which fast food chain first introduced the concept of 'Umami' as a central marketing strategy for their burger line, causing a trend of fifth-taste awareness in American fast food marketing?

Marketing food products effectively often involves appealing to specific sensory experiences and cultural trends. This poll tests your knowledge of an innovative marketing campaign that revolutionized how a traditional product was perceived by consumers through strategic flavor profile positioning.

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Umami Burger (founded 2009)
McDonald's with their 'Signature Crafted' line (2017)
Wendy's 'Black Label' burgers (2012)
Burger King's 'Umami King' campaign (2014)