Which food product was transformed from an unpopular item to a breakfast staple in the 1920s after a marketing campaign positioned it as 'healthier than heavy breakfasts' with the slogan 'Bacon and Eggs'?

The breakfast food industry has seen some revolutionary marketing campaigns that completely transformed consumer behavior. One campaign in particular stands out for turning a previously unpopular food into a morning staple through clever positioning and advertising. Test your knowledge about this famous marketing transformation that changed American breakfast habits forever!

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Bacon (previously considered a less desirable meat cut)
Orange juice (previously consumed only as a dessert ingredient)
Cornflakes (previously only used as animal feed)
Pancakes (previously only eaten on special occasions)