Not since Harold and Kumar went to White Castle has there been such an insatiable hunger for burgers — but not for just any patty.

The popularity of the Impossible Burger, a plant-based creation that has created a sizzle, even among circumspect carnivores, has disrupted the supply chain of two major US chains, White Castle and Red Robin.

The feeding frenzy comes after Burger King debuted the Impossible Whopper at 300 locations across the United States this spring and plans to roll it out at all 7,200 of its domestic restaurants by the end of the year.

Impossible Foods, a

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