Thread: Why, oh why?
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Old 12-17-2010, 05:06 PM   #18
Undertoad
Radical Centrist
 
Join Date: Jan 2001
Location: Cottage of Prussia
Posts: 31,423
Coffee is a unique product, with unique packaging needs. After the beans are roasted, they need to be vacuum packed right away for freshness, but they also "outgas" for a while. So they need a flexible vacuum package with a completely airtight seal, and a little valve that lets air out, but not in.
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