Kenji Lopez Alt is a food writer, editor, and cookbook author. He is the Chief Culinary Advisor of Serious Eats, and his first book, The Food Lab: Better Home Cooking Through Science (based on his Serious Eats column of the same name), was published in 2015.
Lopez Alt's knife of choice is the Tojiro DP Gyuto 240mm. He has said that he likes this knife because it's "sharp as hell out of the box" and holds its edge well. He also appreciates that it's a relatively inexpensive knife, especially for its quality.