It's intentionally never explained. They've denied that it was human meat on the grounds that it would be too obvious, although there is that scene where Hilary meets an ambulance in the woods at night.
>>21406 >Though it is never revealed what "special stuff" consists of, many have assumed that it is human meat. However, the writers have denied that this is the case, stating that they can think of "nothing more mundane than cannibalism", and indicating that it is something much worse. However, the Season 1 DVD includes a fragment of brainstorming materials in its bonus section, on which the idea of the butcher selling human appendices obtained from the local hospital is listed. Others suspect it is a highly addictive substance like cocaine, given various clues throughout Seasons 1 and 2. As revealed in season 2, Hilary's wife is a cow. Some may believe that the special stuff might be the meat of some kind of cow human hibrid that comes from his intercourse with the cow. Even the writers were apparently not sure what the special stuff was at the beginning of the series. When Briss takes Maurice along with him to receive a "special delivery" from deep in a dark forest, we see whom he gets the special stuff from: a tall ominous figure accompanied by a hunchbacked figure. It is shown that even Briss seems absolutely terrified of them. The only clue from the original live shows as to what the substance is that it rhymes with "drawstring", which has led some fans to believe that the "special stuff" is circumcised foreskins. Another clue is that the Hebrew for circumcision is Brit milah, [1] which, when used in everyday English, is known as a "Brit"--or, more regularly--a "Bris."