What are your favorite ingredients and tools? Beans, potatoes, onions and leeks, nuts, eggs, pancetta, Spanish smoked paprika, Dijon mustard and butter. I seriously just got hungry typing that. I love my 12-inch cast iron skillet most of all and use it for everything from pancakes to roasted chicken. If I'm being honest, I like more OCD items that keep me sane when I'm writing a recipe — oven thermometer, instant-read thermometer, digital scale in grams and ounces and the ruler I keep in the kitchen. I realize this makes me sound insane, but surely you'll be happiest if the cookie I tell you will cook in 12 minutes at 350 and spread to 2 1/2 inches actually does.