The Staffordshire oatcake with sausage swaps the bacon for a sausage and keeps the oatcake doing the defining work. The Staffordshire oatcake is a soft, floppy, savoury pancake of oatmeal, flour, and yeast, cooked thin on a hot griddle, pliable rather than crisp, closer to a Breton galette than to anything baked. Sausage is the heavier of its two classic loads. The defining decision is still the carrier, a bread that folds completely around its filling and seals soft against itself rather than stacking between two rigid faces, but the sausage changes the structural problem: where bacon lies flat in a thin layer, a sausage is bulkier and rounder and the fold has to manage a thicker, less even load. In the Potteries this is breakfast and it is regional before it is anything else.
The craft is heat, the cut of the sausage, and the fold. The oatcake is warmed through on a griddle or under a grill, because one left to cool turns leathery and splits when bent. The sausage is cooked through and rendered, then split lengthwise or sliced so it lies flatter and the oatcake can wrap it without the round shape forcing the fold open, usually with cheese melted under the grill to grip the oat surface and bind the seam. The oat structure takes the sausage's rendered fat better than soft white would, soaking a little without going to paste. It carries no separate sauce, because the oatcake's faint nutty sourness is part of the seasoning and a wet dressing would steam it limp. Folded or rolled, it is eaten in the hand off a hot plate rather than packed cold, the fold tighter than the bacon version because the load is heavier.
The variations stay inside the warm, folded frame. Sausage and cheese is the baseline; sausage with egg or the full-breakfast load pushes it toward a complete meal in a single fold; a double oatcake stacks two with the filling between for a heavier build. The bacon version is the lighter, flatter sibling, and the Derbyshire oatcake is a close regional cousin with its own crumb and loyalties. Each deserves its own article rather than being crowded in here.