Bread Knives: The Sacrificial TeethWhy serrated edges survive the cutting board.

From the show

Why it looks like that

While most cooks believe serrations are simply for sawing through crust, this design serves a critical engineering function for longevity. Unlike straight blades that dull against the cutting board, a bread knife's protruding teeth act as guards. These high points take the impact of the hard surface, ensuring the recessed cutting curves never touch the board and remain razor-sharp for years.