Old School Roll

An "old school roll" is not a recognized or common name for a specific type of food in the United States. It's possible that it could refer to a regional or specific restaurant's dish. Without more context, it's difficult to provide a detailed explanation. However, I can tell you that in general, a roll is a type of bread that is often sliced horizontally and used to make sandwiches.

If you're looking for information about a specific dish called an "old school roll" from a particular restaurant or region, I would recommend searching for more information about that specific dish, such as the ingredients or the region in which it is served. That will likely provide more context and help you understand what the dish is.