The West Virginia pepperoni roll is the rare sandwich with no sauce, because the sauce is baked into it. Sticks or slices of cured pepperoni are folded into a soft yeast dough and the whole thing goes into the oven together, so as the roll bakes the pepperoni's fat renders and bleeds outward, soaking the surrounding crumb in spiced orange grease. That seepage is the entire design. The bread is not a carrier for a filling; it is a sponge engineered to absorb the rendered oil and become the seasoned part of the sandwich.
The craft is in the dough and the bake. The dough has to be soft and slightly sweet but strong enough to hold its shape around a fatty filling without splitting or going greasy-heavy, and it is shaped closed around the pepperoni rather than slit and stuffed, so the fat has nowhere to escape except into the crumb. The pepperoni is cured and firm so it holds its bite through the bake and renders slowly rather than dissolving. Timing decides the result: the roll comes out when the crust is set and the interior is shot through with oil but still tender, because an overbaked roll goes dry and the whole point, the grease-soaked crumb against the chewy spiced meat, is lost. It needs no refrigeration and survives a coat pocket or a lunch pail intact, which is exactly the brief it was built to satisfy for the coal seams of north-central West Virginia.
The variations stay close to the closed-roll logic and are mostly about what shares the dough. The cheese version melts provolone or a mild white cheese into the roll alongside the pepperoni; the hot version folds in banana peppers or a smear of sauce so the grease is no longer the only seasoning; the larger sandwich-shop builds split the roll and add fillings, which loosens the sealed-and-soaked principle that defines the original. Each belongs to the wider stuffed-pocket family and changes one element around the baked-in pepperoni, and each deserves its own article rather than being crowded in here.