What Makes Milwaukee's Frozen Custard Scene Special?

Bubbler Talk is supposed to be on its summer break, as we gather more questions and look for more answers to what you’ve always wanted to know about this place we call home. But not long before the hiatus, a question came in that it would be a shame to wait until fall to answer. "Hi, my name is Sarah Richoux, from San Francisco. My question is: Why is frozen custard such a big deal in Milwaukee?"