Which famous sweet product was accidentally invented in 1879 when Henri Nestlé and Daniel Peter were trying to create a different food product entirely?

Throughout history, many revolutionary products we can't imagine living without today were actually discovered by accident! These fortunate mistakes have led to billion-dollar industries, iconic brands, and products that have stood the test of time. This poll tests your knowledge about one such famous accidental discovery that transformed from a laboratory mishap into a household name. Do you know which beloved sweet treat was created when an inventor's experiment went delightfully wrong?

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Milk chocolate (when they attempted to make longer-lasting milk)
Cotton candy (when trying to develop a precise dental tool)
Popsicles (when soda powder was accidentally left on a porch overnight)
Corn flakes (when boiled wheat was forgotten and left to go stale)