Update: I went on their tour this weekend. It was very informative and was lead by their head brewer. He passed around the grains and hops for us to smell. We could try a Cascade hop too, which I did. This is the cleanest brewery I have ever been to! It was well-organized and the fermenters were named after important women in the owner's life. Tours are on Saturdays at 3:30 pm.
I can't believe I hadn't been on their tour! I lived in Lake Mills for 18 years.