Bacon and Sausage Butty

The thing that separates this from a plain bacon bap is a knife stroke down a sausage. The bacon bap is one cured meat on a roll; the bacon-and-egg bap routes the second filling through a soft yolk; this one puts a second cooked meat in the bread and then has to make a cylinder behave inside a fold. The cook draws a blade the length of a banger, opens it like a book, and lays the two cut faces down on the steel to brown flat. Two or three split bangers go on one side of the flat-top, a row of back rashers on the other, a stack of soft floured rolls waits under a cloth, and the build is a banger butterflied flat with bacon folded over it. The second meat does not just add to the count. It adds a different fat from a different cut and a casing the bacon never had to manage.

That butterfly stroke is what lets the sandwich hold together at all. A back rasher is thin and flat and stacks neatly. A British breakfast sausage is a cylinder, and a cylinder dropped into a fold rolls straight back out at the first bite. Splitting it along the long axis and laying it cut-face up turns the awkward shape into a flat base, with the rasher riding on top as a salty top sheet. The roll is sized up from a plain bacon butty, a wider footprint and a deeper bite, because two proteins want more bread under them than one does. Get the split too early, before the casing has set, and the sausage browns unevenly and bleeds raw juice across the bacon; get it right and the cut face crisps into a flat brown plank that carries the load.

Brown sauce is the standard answer at the counter, and it has a paper trail. The classic version, HP, traces to Frederick Gibson Garton, a Nottingham grocer who registered the name H.P. Sauce in 1895 and sold the recipe in 1899 for 150 pounds to Edwin Samson Moore of the Midland Vinegar Company in Birmingham, which put the Houses of Parliament on the label and turned it into the brown bottle on every caff table. The malt-vinegar tang and tamarind sweetness do real work on this roll, because there is roughly twice the rendered fat here that a brown sauce has to push against on a single-protein bap. Red sauce, sharper and sweeter, is the other camp, and the two arguing across a transport-cafe table is older than most of the cafes.

The order at a builders' caff in the East End or a transport cafe on the A1 is the same four words said in one breath while the cook is still working the pan: bacon and sausage, brown sauce. The sausage is asked for by count, often two; the bacon by rasher, often two. Salt sits on the counter and is rarely asked for. The roll changes name with the region, a barm in Lancashire, a cob in Nottingham, a stottie wedge in the North-East, but the building does not change. Builders order the bigger fold because the day is long, office workers order it on a Friday because the week is done, and greyhound tracks sell it by the dozen at the early meeting.

How crisp the bacon should be is not a matter of opinion to everyone. In 2007 University of Leeds researchers led by Graham Clayton, working for the Danish Bacon and Food Council, ran more than a thousand hours and seven hundred variants on the plain bacon sandwich, measuring the crunch in decibels and the snap of the rasher in newtons, and landed on a formula and a verdict: crisp grilled back bacon, not too fat, on thick white farmhouse bread. That study was about the one-meat roll, not this two-meat one, but the rasher in this fold answers to the same brief. The sausage underneath wants the opposite handling, slow on the flat-top until the casing gives a quiet snap, so a single roll asks the cook to cook two meats two different ways and land them in the same bite.

The Transport-Cafe Roll

The roll has no inventor and no birth date; its history is the history of the British transport cafe and the working canteen rather than of any one kitchen. Even the name is older than the sandwich. "Butty" is a Northern English word recorded from the mid-nineteenth century, a clipping of butter or of bread-and-butter, and it meant a buttered slice in Lancashire and Yorkshire long before it meant a filled roll with two fried meats inside.

The fillings are older and better dated than the fold that joins them. The British pork breakfast sausage in its modern form sat on butchers' shelves through the nineteenth century, and the slang "banger" for it is in print by 1919, plausibly tied to the way high-water sausages of the period burst and spat in the pan. Back bacon, the lean cured loin cut distinct from the American belly rasher, was the default of the working breakfast through the same years. Where both meats were cheap at once, the fold that carries them turns up.

The road that made the market came with the law. The Road Traffic Act of 1930 reorganised long-distance goods haulage in Britain and put more lorries and their drivers on the arterial routes, and the cheap fried-breakfast roll behind a tea counter on the Great North Road was a fixed sight by the time war broke out in 1939. The greasy-spoon census taken by the Classic Cafes project in the 1990s found these counters still serving the same fold, by then a heritage object as much as a breakfast.