At Powell’s, we love a good cookbook: the recipes that make you want to head straight for the kitchen, the mouth-watering photos, the advice on how to approach cooking and how to make recipes your own. We treasure cookbooks so much that many of us have shelves and shelves — and in some cases entire bookcases — devoted to them at home. While we’re not about to pare down our collections, we thought it might be interesting to consider what would happen if we had to give up all of those books except for one. What cookbook would get us through meal after meal, day after day? We asked our staff this very question. Here’s what they chose.