(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).
As Time Goes By. Dry flours contain natural oils, which can go rancid over an extended period, only store well for six to eight months. Dried fruits still contain some moisture, so they only retain their quality for about six months, while vegetables, which dry completely, store well for up to a year. Plan to use the food within six months if you are unsure of the exact storage length recommendations of a specific item.