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Michael Tierney was roasting s’mores when his million-dollar idea struck. “The cold piece of chocolate was just sliding around the graham cracker like a hockey puck on ice,” he says. Annoyed, he shoved the chocolate directly into a marshmallow, where it melted harmoniously over the heat. Bingo.
Why hasn’t someone commercialized this? he wondered. The answer would turn out to be far more complex than he had imagined.