Vieux-Boulogne is an unpasteurized, unpressed cow's-milk cheese

Cheese

Cheese is a generic term for a diverse group of milk-based food products. Cheese is produced throughout the world in wide-ranging flavors, textures, and forms....

 made in the Pas-de-Calais département around the town of Boulogne-sur-Mer

Boulogne-sur-Mer

-Road:* Metropolitan bus services are operated by the TCRB* Coach services to Calais and Dunkerque* A16 motorway-Rail:* The main railway station is Gare de Boulogne-Ville and located in the south of the city....

 in France.

This artisanal cheese is square in shape, at around 11 centimetres across and 4 centimetres high, and weighs up to 500g. It has a soft, elastic central pâte, surrounded by a moist, red-orange washed rind that is washed in beer during production. The cheese is pre-salé (pre-salted).

Vieux-Boulogne is famed for its strong smell, and in November 2004 was found by researchers at Cranfield University

Cranfield University

Cranfield University is a British postgraduate university based on two campuses, with a research-oriented focus. The main campus is at Cranfield, Bedfordshire and the second is the Defence Academy of the United Kingdom based at Shrivenham, Oxfordshire. The main campus is unique in the United...

to be the "smelliest" of 15 French and British cheeses that they tested. A followup test done by the same institution using "electronic nose" sensors in March 2007 reaffirmed Vieux-Boulogne's status as the world's "smelliest" cheese.