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Is there a heirarchy of preference for used vegetable oil?

April 26, 2017heirarchy Oil Used vegetable

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Is there a heirarchy of preference for used vegetable oil?

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Yes, oil which has been used to cook: 1) only vegetables (fries, tempura, etc.); 2) fish; 3) chicken; 4) beef and pork. For the best quality biodiesel, avoid oils mixed with lard, tallow, grill scrapings, or any other waste animal fat.