Culver's started in Wisconsin and built its name on two things: the ButterBurger, a fresh-cooked patty served on a lightly buttered, toasted bun, and fresh frozen custard made in small batches through the day rather than left sitting in a machine. Alongside the burgers you'll find cheese curds, crinkle-cut fries, and dine-in service where you order at the counter and they bring the food out to you. The custard is where regulars pay closest attention: the Flavor of the Day rotates daily, so the concrete or sundae worth stopping in Duncan for depends entirely on which day you show up.

Wayback works the way an old-school burger stand does: patties smashed thin and cooked to order instead of held under a warmer, stacked as high as you care to go, and washed down with a hand-dipped milkshake. It's a franchise, so the menu holds few surprises, but the spot sits right off I-85, which makes it a dependable stop when you're moving between Upstate towns and want something quicker than a sit-down meal. Counter service, easy in and out, more of a lunch-run spot than a place to linger.