A slice of Mimolette, a cow’s milk cheese from near Lille, the crust of which is inoculated with cheese mites (Tyrophagus casei) during ageing, resulting in the weird moon-like grey texture. The taste is a little like cheddar, if nowhere near as interesting. The colour of the inside (from annatto) is off-putting but the way it breaks apart in geometric-looking waxy slabs is somewhat satisfying.