Growing up with Serrogy's, Beerntsen's on Broadway in Green Bay, and Kaap's all very near, in biking distance, I thought these stores were plentiful and spread throughout the land. The world can now mine this vein of chocolate via the web
This article from 2008, NY Times tour of Wisconsin's candy "delta" shows that there is a certain shape in Wisconsin to many great candy stores. A weekend trip or ordering online might be a great idea.
Check out page two of the NY Times Wisconsin candy land article for a listing of all the candy establishments locations and their web site that were mentioned in the article.
