Gutter oil Taiwan

Chang Guann has been buying what's known as “gutter oil” — recycled oil from restaurant waste and...

Gutter oil or sewer oil is a general term for oil that has been recycled. It can be used to descr...

Gutter oil typically comes from a variety of food waste sources, including sewer drains, grease t...

TAIPEI -- In early September, Taiwanese investigators busted Kaohsiung-based Chang Guann for mixi...