One of the factors is also sharing.
Out here, many restaurants have embraced sliders as a means of selling the same amount of meat, but, in smaller, more easily shared portions. There are a lot of folks that will pass on a larger sandwich for dietary or appearance reasons, but, will eat a slider readily. Price points to entry are every bit as valid as total price of each sale. In truth if you are charging $2.75 for a single slider, that is 1/2 of a large $5 sandwich, and you are using exactly the same food costs, you are better off selling sliders. That is the math out here.
the meat thermometer was so far past the top reading, it read Taylor
"perhaps...but then again...maybe not..."