Book excerpt: Steven Raichlen, a national barbecue treasure and author of The Barbecue! Bible, How to Grill, and other books in the Barbecue! Bible series, embarks on a quest to find the soul of American barbecue, from barbecue-belt classics-Lone Star Brisket, Lexington Pulled Pork, K.C. Pepper Rub, Tennessee Mop Sauce-to the grilling genius of backyards, tailgate parties, competitions, and local restaurants. In 450 recipes covering every state as well as Canada and Puerto Rico, BBQ USA celebrates the best of regional live-fire cooking. Finger-lickin' or highfalutin; smoked, rubbed, mopped, or pulled; cooked in minutes or slaved over all through the night, American barbecue is where fire meets obsession. There's grill-crazy California, where everything gets fired up - dates, Caesar salad, lamb shanks, mussels. Latin-influenced Florida, with its Chimichurri Game Hens and Mojo-Marinated Pork on Sugar Cane. Maple syrup flavors the grilled fare of Vermont; Wisconsin throws its kielbasa over the coals; Georgia barbecues Vidalias; and Hawaii makes its pineapples sing. Accompanying the recipes are hundreds of tips, techniques, sidebars, and pit stops. It's a coast-to-coast extravaganza, from soup (grilled, chilled, and served in shooters) to nuts (yes, barbecued peanuts, from Kentucky).