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While Kraft Foods Inc.'s (NYSE: KFT) Oscar Mayer brand and ConAgra Food Inc.'s (NYSE: CAG) Hebrew National may both have venerable histories, they also have very different personalities: "I wish I were and Oscar Mayer wiener" vs. "We answer to a higher authority."

In 1900, Oscar Mayer and his brothers ran one of the most popular sausage makers in Chicago. They pioneered the use of brand names and voluntary federal approval to protect the reputation of their products. The company was the first to offer packaged sliced bacon. Such innovations helped Oscar Mayer to become an industry leader. The first wiener-mobile rolled out in 1936, and its descendants can still be spotted today. The famous Oscar Mayer jingle was introduced in 1963, and today is one of the longest-running jingles still in use. In 1988 the company launched its Lunchables, prepacked cracker-and-cold-cut school lunches. Oscar Mayer became a Kraft Foods brand in 1989.

Kraft Foods is the largest U.S. food company, with $37.2 billion in sales in 2007. Oscar Mayer is one of seven Kraft Foods brands with more than $1 billion in revenue. The convenience meats category accounted for about 16% of total revenue.