Knives aren’t just tools, they’re the backbone of every great kitchen. Sure, most people know the difference between a bread knife and a butter knife, but true knife skills go far beyond that.

Andrew Zimmern attends The St. Regis Grand Sabrage, celebrating the brand's 120th Anniversary at the Food & Wine Classic at The St. Regis Aspen Resort - Greg Doherty/Getty Images Before you spring for ...