Fifty years ago, the owners of this wood-paneled country kitchen offered (in addition to their signature breaded-pork tenderloin sandwiches) milkshakes and sundaes in three flavors. Hooray for progress: Today you get a mind-melting 100 choices, be it the Sticks & Stones—a chocolate shake with pretzels and cookie dough chunks—or the cherry-nougat sundae, vanilla soft-serve topped with marshmallow fluff, maraschinos and pecans. Artisanal, Ivanhoe’s is not; an iconic slice—or rather scoop—of Americana, it most certainly is.