(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).
Grape Seed Oil. Grape seed oil can be stored without refrigeration for 3 months if the storage temperature does not climb above 70ÂºF, however since it contains a high level of polyunsaturated fat, it is best to store it in the refrigerator for up to 6 months. Storing the oil in an area of excessive heat will cause it to deteriorate rapidly. Hazelnut Oil