A slider is a small sandwich, typically a beef patty on a miniature bun, sized to be eaten in a couple of bites. The name's origin is disputed: it is commonly associated with White Castle, whose small burgers have been served since the 1920s, but food historians also trace the term to U.S. Navy slang from World War II, describing how easily a greasy small burger slides down the throat. Sliders are usually served in multiples, often with different toppings or proteins per slider, which makes them a common choice for appetizers and share-style meals. Besides beef, common variations use chicken, pulled pork, or plant-based patties.