At least the name of the food doesn't try and cover what it is - casu marzu translates to "rotten goo", which is an apt description. The brown mass, after the critters - the larvae of Piophila casei - have gone to work, results in a fermented cheese with decomposing fats. The taste is described alternately as vaguely rotten and pungent, or as delicate and piquant, depending on the person. The cheese burns the tongue and throat when eaten. It's claimed to have both aphrodisiac and psychotropic qualities - one person, after his first time eating it, claimed to have a strange crawling sensation on his skin for days.