I have to second Louie's in Cumberland. If you are driving through on a weekend, they may even have the Brat wagon going. You can practically have lunch with all of the samples at the counter.
Good meat and sausage at Louie's Finer Meats in Cumberland, WI. Used to eat at Dan Hick's in Spooner but it's been a long time. (It's a stand on Business 53 - so if you're heading up in the winter it may not be the best recommendation...)