France and the Alps · Volume 16, Altitude, Cheese and a Border the Kitchen Never Drew
Longeole, with cardon gratin
Geneva canton only
An illustration of the dish, not a photograph of it cooked.
- Time
- 3 hours
- Researched
- 22 sources cited
- Reviewed
- Not yet reviewed from inside the tradition
- Cooked
- Not yet cooked and reported
Geneva canton only. A genuine local product built for immediate poaching, not export, and honestly unsourceable in the UK at the time of writing; this dish is included for what it teaches about technique and about the limits of substitution, not because a British reader can currently buy the real sausage.
As tradition built it
Serves 4. About 3 hours.
Ingredients
- 3 equal parts by weight pork meat, neck fat and raw pork rind, ground coarsely, for the longeole
- 16 to 20g salt per kg, fennel seed and white pepper to taste fennel seed, salt and white pepper
- roughly 1 kg cardon épineux genevois, for the gratin
Method
- Grind the pork meat, neck fat and raw pork rind coarsely, and mix with fennel seed, salt and white pepper.
- Poach the longeole whole, uncovered, at a bare simmer for 2.5 to 3 hours depending on weight.
- Serve traditionally with a gratin of cardon épineux genevois, Geneva's own protected spined thistle, at the centre of the Genevan Christmas table.
What a modern chef changes
A precise, extended sous vide poach that respects the traditional cooking time exactly, and the cardon gratin rebuilt with the same rind-as-active-surface logic used elsewhere in this chapter
Rungs 1 and 3
Method
- Poach sous vide at 85°C for the full traditional 3 hours, rather than shortening the time to suit a water bath's precision. The point of the modernist version here is not to speed the dish up, since the raw rind genuinely needs the full duration to render its gelatine properly, but to guarantee the bare-simmer temperature never drifts toward an actual boil, which would toughen the coarse grind in a way the traditional method's careful attention is specifically designed to avoid.
- For the cardon gratin, treat the vegetable's own fibrous outer layer the way rung 3 treats a cheese rind: strip and discard only the toughest outer strings, but leave the more tender inner ribs with their own slight bitterness intact rather than peeling aggressively, since that bitterness is doing real work against the richness of the sausage and the gratin's cream.
- Where the genuine longeole cannot be sourced, build an honest homage rather than a claimed equivalent: a coarse, fennel-added Toulouse-style pork sausage, poached, not fried, at the same bare-simmer temperature and duration. State plainly on the plate and in any menu that this is a homage to a Genevan dish, not the dish itself, in the same spirit as this chapter's own sourcing section below.