INTRODUCTION For years I've said, "If you can cook 10 recipes, you can cook 10,000," and while I've always felt it was true, I've never believed it more strongly than I do right now. Writing this book has convinced me all over again that from simple recipes spring nearly endless possibilities.  Real home cooking, to borrow an old but apt cliché, is a marathon, not a sprint. It's something you do day to day, week to week, season to season, year to year, forever. Most of us who cook on a regular basis don't constantly come up with brilliant and innovative dishes-- I'd probably be out of ideas in a month--nor do we slavishly follow recipes to the letter; I'd be bored in a week. Instead, we stake out a sweet spot somewhere in the middle; we learn how to cook a handful of basic dishes--salad and vinaigrette, tomato sauce, or soup, for instance--and what to do with everyday ingredients, like chicken breasts, shrimp, or potatoes. As soon as we're comfortable with core recipes and techniques we begin to improvise, swapping cilantro for parsley, say, or braising in coconut milk instead of wine, or grilling instead of broiling. We embrace the small but meaningful variations that can transform the identity of a dish, make an old favorite taste like a new creation, and turn a modest repertoire of recipes into a lifetime of wonderful meals. This book showcases and encourages the kind of creativity and flexibility that make daily cooking not just doable but also pleasurable. And it takes little more than a glance at the chapters here-- "Apples, 12 Ways," "Slaw, 8 Ways," "Leg of Lamb, 3 Ways"--you get the idea: to figure out my fundamental approach, pick an ingredient or a dish and see just how many things you can do with it. The result is a collection that looks quite different from anything I've done before, and thanks to the stunning photography, more beautiful. The recipes come in multiple guises: some are conventional with ingredient lists and steps; others are more radical with directions scarcely longer than a tweet. Many are meant to facilitate improvisation in the kitchen, catering to all sorts of cooking styles and preferences.  Whether you like to stick to the script or cook off the cuff, undertake all-day projects or bang out fast weeknight meals, plan a detailed menu or shop first and ask questions later, there is something here for you. With this combination of recipes, art, and text I hope to depict as richly and inventively as I can just how infinitely gratifying cooking can be.  GROUND RULES 1. All recipes serve four unless otherwise noted. 2. Salt and pepper is assumed for every recipe (except desserts) where it's not mentioned explicitly. Use your judgment, but do use salt. 3. When neutral oil is specified you can use grapeseed or corn oil (safflower and sunflower are fine too). 4. Olive oil means extra-virgin. 5. All lemon and lime juice should be fresh. 6. All butter is unsalted. 7. All cream is heavy (whipping) cream. 8. Flour is all-purpose unless otherwise specified. 9. For scallions, use both white and green parts unless specified. 10. For ingredients that don't have specific quantities listed, use your judgment and taste, taste, taste. Excerpted from Mark Bittman's Kitchen Matrix: More Than 700 Simple Recipes and Techniques to Mix and Match for Endless Possibilities by Mark Bittman All rights reserved by the original copyright owners. Excerpts are provided for display purposes only and may not be reproduced, reprinted or distributed without the written permission of the publisher.