Everybody in this town knows Ted Drewes frozen custard stand, https://teddrewes.com/. It has been serving taste heaven for 80 years (and selling Christmas trees in December for 50 years). The signature treat is called a concrete because if you turn the cup upside down the custard won't fall out (subject to melting on a hot day). It's available in a boggling variety of flavors. I like peach.
This picture was taken late on a weeknight so it's not too crowded. But for the virus crowd control fencing, at mid-evening in the heat of summer the crowd can be spilling out onto Chippewa Street despite the cars speeding by.