"Cookies, when you make small changes to ingredients, we find that you get some pretty massive differences," Souza told Morning Edition's A Martinez. So, it's kind of a fun one to use as a litmus test ...

Whether you're banging nails into a two-by-four or whipping up the perfect soufflé, there's no substitute for having the right tool for the job. And one way to keep the chef in your home happy is to ...