Ten years ago time-pressed home cooks with day jobs used a slow cooker to get dinner started in the morning and have it waiting for them at the end of the day. Many still do, but there is a new option--more like an old option undergoing a stunning revival--on the scene. Pressure cookers cook so fast that they make it possible to start a dinner at the end of the work day and have it on the table in fifteen or twenty minutes flat. New electric pressure cookers, whether the widely touted Instant Pot or the popular models from Presto, T-fal, Black + Decker, and other makers, are driving this...