Jane & Michael Stern

"Kopp’s is a joyful place where eaters chow down on hamburgers wherever they can find a place to lean, inside or out. The burgers ooze with butter as is the custom in Milwaukee."

Daniel Zemans

"One bite into these large, well done but surprisingly juicy burgers makes clear that the butter is doing its job; the beef is seriously delicious."

Ann Christenson

"One of my favorite cheeseburgers – wide, thin and consistently good – and crisp, close-to-perfect onion rings."

Lacey Muszynski

"Kopp’s serves up the ultimate local fast food burger, butter included. The patties are thin, but so is the bun, giving just the right meat-to-bun ratio."

OnMilwaukee

"The Kopp's burger is juicier, cheesier (I chose to add cheese to my burgers) and -- if requested -- has perfectly-grilled onions that take the burger to a new level of fast food decadence. (Oxymoron? Not in the case of the Kopp's burger!)"

Louise Moonert

"I used to work about two minutes from a Kopp's Custard place and it was really hard not to stop there every day, if not for a scoop of custard, then a butter burger. I think their burger is yummy."

Jeff Fortin

"The burgers are known throughout the area as some of the best and I cannot argue otherwise. The butter burgers are large and full of flavor."

Laura Meli

"Yes, people come here for the frozen custard, but the butter burgers are one of the very best in the state."