Whopper

The Whopper is the signature sandwich and an associated product line sold by international fast food restaurant chain Burger King and its Australian franchise Hungry Jack's. Introduced in 1957, the sandwich has undergone several reformulations such as portion resizing and bread changes. The hamburger is well known in the fast food industry, with Burger King billing itself as "the Home of the Whopper" in its advertising, signage, and in its concept store, the BK Whopper Bar. Due to its position in the marketplace, the Whopper has prompted Burger King's competitors to try to develop similar products designed to compete against it. Burger King sells several variants that are either seasonal or tailored to local tastes or customs. To promote the product, the restaurant occasionally releases limited-time variants. It is often at the center of advertising promotions, product tie-ins, and corporate practical jokes and hoaxes. Burger King has registered many global trademarks to protect its investment in the product.

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