You have two cows.
The city council demands that you disect
one of them and allow the town citizens to do whatever they want to it.
The town citizens use genetic modification to enhance choice organs.
They take several days to re-animate the cow, until they finally have a working zombie-cow that produces SuperMilk (similar to Popeye's spinach) but random organs stop every 10 seconds, forcing
the people to disect it again just to fix it.
You live happily on your regular milk while the town
struggles.