Gutter oil, the state and relevant departments are still studying and verifying the detection method of gutter oil. The following points are summarized for your reference.

Four tips to identify:

1. Taste: If the oil smells spicy, it is most likely edible oil refined from gutter oil;

< p>2. Distinguish odor: Put a small amount of cooking oil in the palm of your hand and rub it back and forth. If there is an odor in it, it is likely to be mixed with gutter oil;

3. Put it in the refrigerator: Put the oil in the In the refrigerated area of ??the refrigerator at 5 to 8 degrees Celsius, solidification and crystallization will appear within 2 to 4 hours, which is likely to be waste oil. Because animal oil containing a considerable amount of oil is added to gutter oil.

4. Burning over high fire: If the color of the oil changes after being burned over high fire, becoming thicker or black, it means it is most likely gutter oil, because the small particles contained in the gutter oil are burnt. It is easy to change color later.

5. Look at the transparency of the oil. Authentic cooking oil is clear and transparent. If you put a note on one side, you can clearly see the words on the other side under the light from the opposite side. However, gutter oil is definitely turbid. The more mixed it is, the turbid it will be.