(AP) -- Phil DeVore pulls a folded piece of aluminum from a murky pond. The aluminum looks like a piece of siding that's blown off a building, but DeVore knows it's much more valuable than that. He slips a rubber band off the aluminum and unfolds it. He likes what he sees -- 50 or 60 glistening black leeches. They're your common ribbon leeches, Nephelopsis obscura to aquatic biologists.
After its initial use, cooking oil can be refrigerated or frozen and reused for another six hours of cooking (see References 2). Don't reuse cooking oil if it smells rancid or you can't heat it without smoke developing, as this indicates significant deterioration (see References 1 and 4).
It might be one year, two years or even four years, it depends. Because of that, you can safely assume that every coconut oil lasts at least a year, but a few years is the most common scenario. Hereâs a rule of thumb: as long as you canât notice your coconut oil is bad, itâs fine. There is an exception from this rule: if your coconut oil is stored in your cupboard for more than 8 years, throw it out!