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What is FOG (Free Oil & Grease)? - Definition & Meaning

FOG: Stands for Fats, Oils, and Grease. FOG refers to non-petroleum organic polar compounds, such as animal and vegetable fats and oils that consist of multiple carbon chain triglyceride molecules. FOG is a liquid or solid material generated by food preparation facilities. Floatable oil and/or grease from animal or vegetable sources can damage sanitary sewer system to a great extent.