Season 13 Episodes13
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Marc Summers
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The clock has struck noon, so it's time to reach into the brown bag for a look at sack lunch foods. Discover how Wonder Bread gets its special texture, see how bologna is really made, and learn how Deli Express is making sandwiches for on

Marc Summers
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"Sack Lunch" is episode 12 of Unwrapped season 13. It aired on April 24, 2006.