[dropcap]S[\/dropcap]ince last year, Chinese authorities have tried to combat the production and use of recycled waste oil. But this illegal practice remains a common complaint, and there are reports these products are ending up on supermarket shelves. Gutter oil continues to make its way to consumers in China, according to local media. The Beijing Times reported earlier this month that recycled waste oil is being turned into cooking oil. Wholesalers and supermarkets then sell it in places like Beijing, Tianjin and Hebei province.<\/p>\n
According to locals, it’s common for gutter oil or swill oil\u2014which is oil that’s been used repeatedly\u2014to be recycled.<\/p>\n
Mr. Zhang, Shanghai Resident:<\/strong><\/span> Chinese Resident :<\/strong><\/span> State-run China Daily reported last week that Beijing authorities are now cracking down on restaurants using illegal cooking oil. But instead of testing the oil, inspectors ask for receipts to verify the supply channel. Critics doubt this will be effective, because receipts can easily be forged.<\/p>\n One expert from Taiwan also refutes claims by Chinese authorities that testing for recycled oil is too difficult.<\/p>\n Jia-cheng Wu, Chemistry Professor, Taiwan National Normal University :<\/strong><\/span> The Beijing Times reports that some producers can make up to 100 tons of recycled waste oil each day. This oil is potentially harmful to consumers because it contains cancer-causing toxins.<\/p>\n
\n“My place is next to the backdoor of a big restaurant. Several times a day they would come and collect a thick layer of oil from the gutter. I asked them if they’re recycling them, they won’t admit it. It’s disgusting.”<\/p>\n
\n“Commonly small restaurants or street vendors would use gutter oil or swill oil. The stir-fries all have a foul smell.”<\/p>\n
\n“The recycled oil is likely to have highly oil-soluble toxins that won’t breakdown in high heat. If they test for these substances, it’s possible to distinguish between these so-called gutter oil and proper cooking oil.”<\/p>\n