Elsa Kopp founded Kopp's in 1950, according to its website. Kopp's burgers range from $5.75 to $9.25, depending on toppings that include relish, fried onions, raw onions, ketchup, mustard ...
Elsa's on the Park, 833 N. Jefferson St., will reopen toward the end of the month with a revamped menu it's calling "a modern take on New American classics" — and it'll feature Kopp's Frozen ...