How Long Does Cereal Last After Opened in How To

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How Long Does Cereal Last After Opened. The rock of cheeses, hard cheese lasts for 3 to 4 weeks after being opened, whereas soft cheese lasts for about one week after being opened. When it’s unopened, breakfast cereal lasts six to eight months past the date on the box.

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Breakfast cereals don’t really expire, but they also don’t retain quality forever. Of course, all foods last for a shorter period of time if they are not stored properly. Cereal, ready to eat, unopened:

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Properly stored, an opened package of cereal will generally stay at best quality for about 2 to 3 months at room temperature. Over a week or two we open the container six or seven times and complete the vacuuming process each time. Although it has been mentioned that granola is still edible after it has been opened, you should check for ingredients that easily oxidize. Packaged foods (cereal, pasta, cookies) will be safe past the ‘best by’ date, although they may eventually become stale or develop an off flavor.