How to Cook Everything — Mark Bittman

Bittman's philosophy is radical simplicity: if a technique or ingredient doesn't earn its place, cut it. The book contains 2,000 recipes but its real value is the variations listed under each one — teaching you to riff on a base technique rather than memorize individual dishes. His roast chicken uses salt, pepper, and heat. His stir-fry formula works with any protein and vegetable. It's the book that proves you don't need culinary school, you just need to understand a handful of core methods.