For the record, this review is for the Kopp's location at 5373 North Port Washington Road.
I'm from Chicago, but whenever I pass through Milwaukee, I try to stop here for lunch or dinner. The burgers here are huge, and I especially love the option to add jalapeno, buffalo sauce and salsa, making it even better. Their fries are awesome as well. I've never had any of their frozen treats, usually because I am very stuffed from the burger.
Taste is subjective, of course, but think of the quality of meat to something similar to a Five Guy's. Personally, I think the burgers here are a bit better -- and that is not a knock against Five Guys which I also enjoy.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.