Mr. Boxy
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The FDA requires that all consumables be given an expiration date, although they have not established a shelf life for bottled water. Typically, bottled water producers will give their product an expiration date two years after manufacture. By that point the water has had enough contact with the container to give it a plasticy taste, even if it's been stored properly. There are also a few bacteria spores that can withstand sterilization procedures, although infection is highly unlikely.
Once the bottle is opened, bacteria and algae can grow in it like any other water. Unsealed water should be safe to drink for about two weeks.
Honey is a similar case: it's an extremely hostile environment for fungus and bacteria, and edible samples have been found in ancient Egyptian tombs. Like water, it generally receives an expiration date for two years after manufacture, but honey remains safe even after the container is opened. If it crystallizes, honey can be made liquid again by heating it. Honey can still contain small amounts of resilient bacteria spores that can produce botulism toxin. These amounts are so small they have no effect on adults, but there may be enough toxin to cause problems in infants.
 Posted 5356 day ago
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