It just solidified, that kind of yellow-white floc, with a little ice at the bottom. This is a normal phenomenon, and it is impossible to judge whether it is gutter oil. Theoretically, if the chemical components in waste edible oil are extracted, they are the same as those in normal edible oil and can be eaten. The problem is that this extraction process needs very, very expensive investment and expenses to purify it to that extent, that is to say, the oil can not be purified at present, and the oil obtained after the recovery and treatment of waste edible oil now contains many harmful substances and cannot be eaten.