Armadillos do not drop the husk or meat required for Armadillo Simmer Ale.
Innothule Mushroom and Swamp Vegetables do not spawn in Innothule Swamp (Boot Beer ingredients). The mushrooms should be the tiny blue mushrooms and show up on land, while the vegetables are red and spawn in the water. Their locations weren't random until 2003-2004. Not sure on precise locs.
Boot Beer added between February and April 2001, Armadillo Simmer Ale noted but recipe undiscovered -
http://web.archive.org/web/200104162...es_brewing.htm
Armadillo Simmer Ale recipe figured out by June 2001 -
http://web.archive.org/web/200106110...es_brewing.htm