In Seacliff, San Francisco, it's a clear and cool afternoon. Clifford Barbour - whistling cheerfully - is moving along the shade dappled streets with a copper chafing dish under his arm. He's heading three blocks down and two blocks over, to his sister Hazel's house, as earlier today, Hazel's son Hank - a freshman at the University of California, phoned to say he'd be home for dinner. Hazel is now busily preparing Hank's favorite dish...