"Slider garnish," also known as "special sauce," was the topping that Dexter Jettster used to adorn his sliders, a signature dish at Dex's Diner.
The sauce became so popular that customers would order up to a liter of it by itself. Some customers even went so far as to accuse Jettster, during his time as the diner's owner, of including addictive substances in the recipe.
Jettster constantly intended to bottle his incredibly popular sauce and capitalize on its success, but he was never able to find the time to step away from the stove and make it happen.