Sandwich au Jésus

Cut the wooden peg off a Jésu de Morteau on Christmas morning and the casing comes back coarser and broader than the workaday Morteau on the same hook: this is the December-table cure, sixty millimetres across instead of forty, three times the weight, hung in the smokehouse from Saint-Hubert in early November through the December table. The Jésu is the largest grade of the Franc-Comtois smoked-sausage line, the version the Haut-Doubs farmhouse holds back from the autumn pig-killing for the year's biggest meal. It is cooked through before the loaf enters the question. The sandwich is what the household builds on the third day of the festival from the previous evening's poached slice and a fresh baguette. A demi-baguette opened lengthwise, a spoon of warm Puy lentils braised in the poaching liquid, two thick coins of the smoked sausage laid down the crumb still warm from the pot.

The smoke is the dominant register, not the size. The Morteau line is cold-smoked over spruce and fir resin from the tall pyramidal Comtois chimneys called tuyé, twelve to fifteen metres of mountain-farmhouse architecture pulling the conifer smoke up the cone slow enough that the cure runs three days minimum and seven days for the broad Jésu grade. The wider casing slows the smoke penetration and concentrates the cure: the broad caecum-cased coil carries the resinous note deeper and longer than the standard, and the coarseness of the eight-millimetre grind makes each disc read as flecked meat-and-fat rather than as a smooth emulsion.

The slice has to land warm. Cold off the cure, the rendered fat sets to a hard wax and the smoke flattens; the sausage has to be poached gently for forty-five minutes in barely-trembling water before any blade goes through. The lentils are the bridge between the meat and the loaf. Lentilles vertes du Puy, the small AOP green lentil of the Auvergne plateau, hold their shape through a long braise in the cure's own poaching liquid and arrive at the bread as a wet, peppery, lightly fatted relief. A spoonful of them under the coin gives the sandwich the moisture the smoked pork on its own would lack and supplies the contrast the resin and the salt are crying out for. A baguette stripped of butter is the right outer crumb: butter on the inside doubles the fat and muffles the cure.

The build punishes specific mistakes. Slice the cure straight from the pot at boiling temperature and the coins fall apart on the crumb. Slice them cold from the pot the next morning and the resin is dead. The window is the half-hour after the lentils come off the heat. Cut the coin too thin and the wide-casing slow-chewing weight disappears; the format was bred to be eaten thick. Spoon the lentils on dry and they roll off the loaf at the first bite; spoon them on wet enough to carry a film of jus and the bread starts collapsing within ten minutes. The baguette needs a strong, well-baked crust: a soft factory loaf gives way under one wide coin and a smear of braised lentils within three bites. The cheville at the end of the cure, the small wooden peg the cook keeps as a maker's tally on the kitchen rail, is the documentation that the cure was hung in a tuyé and not boiled-cured at a factory.

Lift the lid of the lentil pot on the morning of the twenty-sixth and the rising steam comes up resinous and wood-deep, the conifer smoke out in front of the pork sweetness underneath. A thick coin set on the baguette is warm at the lip and yielding to the teeth where a dry-cured Lyonnais Jésus would resist; the eight-millimetre grind shows visible flecks of meat and pale fat under the wood-dark casing, and the bite breaks coarse on the molars rather than glossing into one register. The Puy lentils underneath snap once between the teeth, then yield to a soft mealy pulse with the wine acid from the braise tucked at the back of the bite. A swallow of cold Trousseau from the same Jura hills the cure was smoked in cuts the fat clean.

The Comtois grammar around the December coil is calendrical and tied to the farmhouse rhythm. The standing order at a Haut-Doubs charcutier is for un Jésu by the first week of December, claimed before the Christmas Eve dinner so the cure makes the table. The cure was named for the Christmas calendar before the Lyonnais cellar adopted the term for its own dry-cured tradition: in Burgundy and the Comtois country the year's biggest pig-killing-day sausage was held back for the Christmas Eve meal under the name Saint-Jésu, the diminutive attaching to the feast rather than the cure itself. A Haut-Doubs charcutier such as the Maison Marguet on the rue de la République in Morteau or the Salaisons Marcel Petite in Pont-de-Roide will tell you which farm the cure came off and how many days it hung in the tuyé before the smoke ran out. The lentil-pot service belongs to the same hill-country grammar: the third-day lunch the household builds from the festival cure and a market baguette while the lentils are still warm on the stove.

The variations stay along the cure and the carrier rather than the bread. A version finished with a thread of the Comté valley's vin jaune in the cure mix reads brighter and carries an oxidative yellow-wine note across the smoke. A leaner version uses a smaller-pig festival cure from a hill farm with shorter hangs, four days instead of seven, and the resin arrives quicker and lighter. The standard Morteau, narrower-cased and faster-cured, is the year-round workaday build catalogued under Sandwich Saucisse de Morteau: the festival grade is the December set-piece the same farmhouse cellar holds back for the bigger casing and the longer hang. The Lyonnais cellar's namesake is an entirely different animal, dry-cured rather than smoked, sold as a coin to be eaten cold rather than as a poached slice off a winter pot, and is catalogued separately as Sandwich Jésus de Lyon; the two share a December name and nothing else. The cumin-seeded Montbéliard, a slimmer aromatic Comtois sausage, is the workaday alternative the Haut-Doubs sells alongside the standard Morteau the rest of the year.

The Haut-Doubs tuyé

The festival-grade smoked sausage has no first cook and no founding workshop. The format is documented in the Haut-Doubs farm record from the sixteenth century onward, when the forested valleys around the town of Morteau began raising the tall pyramidal tuyé chimneys that gave the regional smokehouse its profile: twelve to fifteen metres of stone narrowing from a wide hearth at the floor to a small smoke-vent at the apex, the chimney built into the farmhouse roof so the household hearth doubled as the smoking room. The festival grade is the cure those chimneys produced at the widest end of their range, sold beside the standard line under the same Comtois charcutier's name from at least the seventeenth century.

The name tracks the festival calendar rather than the sausage itself. In Burgundy and the Franche-Comté, the year's biggest cured or smoked link from the autumn pig-killing was reserved by the household for the Christmas table and called the Saint-Jésu, the diminutive attaching to the feast at which the cure was opened. The Comtois usage is older than the Lyonnais adoption of the same term for the city's dry-cured cellar tradition further south, and the festival origin remains the documented one: the Saint-Jésu is the December grade of whichever regional cure the household ran, and the Morteau-line December coil is the Comtois reading of that calendar.

The dated legal record under the modern Morteau is the European IGP awarded on 22 October 2010 to the saucisse de Morteau as a registered category, with the December grade explicitly included as the broad-casing format. The IGP fixes the regional pork, the eight-millimetre coarse grind, the natural caecum casing for the festival grade, the wooden cheville at the casing end, and a minimum seventy-two-hour conifer cold-smoke in a registered tuyé inside the protected zone, which covers four eastern departments stretching from the Doubs through the Jura into Haute-Saône, with the small Belfort territoire at the east end. The Confrérie des Compagnons du Boitchu de Morteau, founded in Morteau in 1991, runs the certified-maker register that issues the IGP cheville to the regional producers.