matter. Gas production from microorganisms is one possible explanation, and because you can’t reliably determine food safety by appearance, smell, or a taste test alone, unusual packaging should be treated cautiously.
The simplest rule to remember is this:
If the puffiness is intentional and normal for the product, it may
be perfectly fine. If a perishable package has unexpectedly ballooned, don’t take chances.
Food packaging can tell you a surprising amount—but when something looks seriously wrong, it’s better to lose a package of food than risk your health.
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