When gasoline is expensive, people get an appetite for home cooking. That's good news for KRAFT FOODS (33, kft), owner of such kitchen staples as Oscar Mayer meats, Nabiscorncrackers and Kool-Aid-brand drinks.rnWith demand strong, the nation's foremost foodie managed to hike prices 7% the past year, while suffering a mere 1 % drop in sales volume. That helped Kraft surprise Wall Street with a 3.5% rise in second-quarter earnings from a year ago to $732 million.
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