Hey Harry,
Lots of ways to cook squirrel. Fried,barbecued, stew, slow cooker, the list goes on and on. One of my favorite ways to eat them is real simple,,,, fry up a bunch of bacon, quarter up the squirrel into pieces, give the pieces of good coating of seasoned flour and fry em up in the bacon grease until they're golden brown. Nothin better,,, my two favorite foods all on one plate...... bacon and squirrel.
If you're concerned about the cardiopulmonary factor associated with the bacon grease you can of course use whatever oil you think is best for you.
Sometimes simple is best :)
As for opening up a restaurant specializing in "critter",,,,, if it ever happens I'll make sure Gene, Bob and Ed are the first ones invited :)
Jeff