(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).
If you refrigerate an oil, its shelf life will increase. If you have a large amount, you can freeze the rest of it if you know you will not use it for a while. We highly recommend either refrigerating or freezing what you will not use right away. The important thing is to keep the oil out of light, air and heat. All carrier oils can be used up to 100%. The only time you may want to consider using it at a smaller percentage is when it is a very rich oil, or it is an oil that is expensive. Almond Oil - Unrefined. Shelf Life of 1 year. Botanical Name: Prunus dulcis.