Plot: How do you turn a backyard cookout into party to remember? At Rick’s place, you raise the stakes and get the guests involved in the cooking. Joined by a crowd of friends in his outdoor kitchen, Rick prepares classic Carne Asada, thinly sliced grilled rib steak (plus a version with Tuna steaks with all the traditional trimmings, including a potful of creamy Charro Beans simmered with bacon; a brightly flavored Salad of Grilled Cactus Paddles, a colorful Salsa Mexicana made with heirloom tomatoes and fresh serrano chiles; and chunky Guacamole that comes with three words of advice: “keep it simple