A truck carrying 27 tons of brunost, a Norwegian brown cheese, caught fire in a tunnel in Narvik on Thursday and burned with gooey rage until Monday. Closed during the fire, because who likes driving through tunnels of flame, the tunnel will take about a week to repair.

“This high concentration of fat and sugar is almost like petrol if it gets hot enough,” said Viggo Berg, a policeman.

Brown cheese is made from whey, contains up to 30 percent fat and has a caramel taste.

“I didn’t know that brown cheese burns so well,” said Kjell Bjoern Vinje at the Norwegian Public Roads Administration.

He added that in his 15 years in the administration, this was the first time cheese had caught fire on Norwegian roads.