Black pudding, mutura, kaszanka, boudin rouge, zungenwurst, blutvurst, biroldo, morcilla, sanguinaccio. Across cultures, historical preparations for blood sausage will be found just about anywhere animals are harvested. And those are just sausage, don’t even get me started on the legion of other sanguine-devoted cultural specialties. Like most meat eaters, I love homemade sausage, and, once…