much as I would hate to been seen in public defending McDonalds, they don't actually pump their beef full of preservatives - any burger made the same way would dry out very quickly & wouldn't generate much mould (http://aht.seriouseats.com/archives/2010/11/the-burger-lab-revisiting-the-myth-of-the-12-year-old-burger-testing-results.html).
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