(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).
Cold pressing dramatically increases shelf life, and providing the oil is stored correctly, it can be kept for up to 12 months. Rancid Hemp Seed Oil is harmful. It is very important to store it correctly. Light, heat and air will damage your oil so keep it tightly capped in the refrigerator and consume within 10 weeks.