Grease trap

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

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

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

The use of gutter oil it turns out is pretty common. This refers to a process of pulling waste oi...