Consumer Reports has put more than 50 knife sets to the test. But what do professional chefs look for in a blade? To find out, we asked Kenji L��pez-Alt, chief creative officer of Serious Eats, whose weekly column The Food Lab explores the science of home cooking. We sent a pair of Consumer Reports recommended knife sets to Kenji's test kitchen in downtown New York City, then showed up a week later with our TV crew to get his take. The verdict? Watch the video to find out.

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