Used Cooking Oil (UCO)
Used cooking oil refers to any liquid, room temperature (68 degrees Fahrenheit), vegetable, or animal-based oil created while cooking or frying. Water and food crumbs could be included in it. Cooking oil scraps are not seen in brown grease. It is also known as waste cooking oil, is produced due to the frequent use of vegetable oils for meals in restaurants, hotels, the food industry, and domestic sectors.