A Michigan restaurant attempted a Guinness World Record for St. Patrick’s Day by mixing up a 550-gallon mug of Irish coffee.

Hofbrau’s in Interlochen mixed together 69 gallons of Tullamore Dew whiskey, 412 gallons of coffee from Traverse City-based Higher Grounds Trading Co., 190 pounds of brown sugar and 69 gallons of cream.

Hofbrau’s general manager said the restaurant has been planning the record attempt for more than a year.

He said he has been in contact with Guinness World Records and evidence from Thursday’s event will be submitted to the organization for official recognition.