Re: Vegan Beer
I've made Cock Ale, it's actually drinkable ... Translating the recipe into more modern terms: First you brew a strong ale (your choice), to make ten gallons. Next, boil a cock (old rooster works well for this!). Bust the boiled bird up with a mortar and pestle (food processor), bones & all. Stick the result into a fine cheesecloth bag with some mace (I use three or four flakes) and cloves (I use 8), and some mashed dates and raisins, about 8oz each. Soak the lot in a couple quarts of fortified wine (I use a young (cheap) version of Oloroso), until the ale is ready to come out of the primary. Discard the bird+spice bag, and decant the fortified wine into the secondary with the ale, discarding the sediment. Allow to sit and clarify for a couple weeks/month(s) before bottling. It's ready to drink after 6 or 8 months in the botttle at cellar temperature (42F, plus or minus).
The added sugar from the raisins & dates makes for a bit more fermentation in the secondary. The gelatin from the bird seems to work as finings to clarify the brew. You can't taste the chicken in the final product, but the head is affected (more protein) (the head is minimal, but there). You can leave out the mace and clove.
Frankly, while the end result is usually quite drinkable, I don't find it to be worth the effort ... I make it once in a while (eight times in 30 years) just to blow people's minds.