Are Cookbooks Obsolete?

With the boom in tablet technology, recipes have begun to travel from home to the office to the market and into the kitchen. With features like embedded links, built-in timers, infographics and voice prompts, the richness of some new apps — like Baking With Dorie, from the baking expert Dorie Greenspan; Jamie Oliver’s 20-Minute Meals; and Professional Chef, the vast app released last month by the Culinary Institute of America — hint that books as kitchen tools are on the way out.