ARVADA, Colo. (CBS4) – Leftover grease from Thanksgiving is being put to good use.

The city of Arvada teamed up with Rocky Mountain Sustainable Enterprises to collect the leftover oil from people who deep fried their turkeys. The oil will be refined and turned into biofuel. It will also be composted for agricultural purposes.

“They also use it for agricultural purposes in feed lots and such, so it really goes to good uses rather than becoming a problem in the city,” Sandra McDonald with the City of Arvada said.

Last year more than 1,500 gallons of used cooking oil were collected along the Front Range.

Arvada has organized the event for the last 5 years. It’s once a year and always the Saturday following Thanksgiving.