>>99830957>>99831101Okay, you serve pickles on request in hamburgers, especially hamburgers that lack good flavor, like at most fast food joints.
Most delis and diners will provide a pickle spear alongside their sandwich because in addition to what Pickle Poster said, the strong brine flavor can actually get rid of bad breath. It sort of gives you pickle-breath, but it's definitely less unflattering than greasy oniony hamburger mouth.