Tablier de Sapeur

Ingredients

• 4 pieces gras-double (ox second stomach, pre-cooked), cleaned and simmered 4–6 hours until tender but firm; cut into rectangles approximately 12 × 8 cm, 1 cm thick
• For the marinade
• 250 ml dry white wine, Mâcon Blanc
• 1 splash white wine vinegar
• 2 sprigs thyme, fresh
• 2 bay leaves
• 1 tsp black peppercorns, whole
• For the panure à l'anglaise
• 80 g plain flour
• 2 eggs, beaten
• 120 g fine dry breadcrumbs
• For frying
• 150 g clarified butter, or duck fat
• For the gribiche sauce
• 3 eggs, hard-boiled
• 1 tbsp Dijon mustard
• 1 tbsp capers, drained
• 4 cornichons, finely chopped
• 2 tbsp mixed fresh herbs, finely chopped (parsley, tarragon, chervil)
• 100 ml neutral oil, for emulsifying

Method

1. 1
   Combine the Mâcon Blanc, white wine vinegar, thyme, bay leaves, and peppercorns in a non-reactive dish. Submerge the tripe rectangles, cover, and refrigerate for 12–24 hours. The marinade must penetrate the full depth of each piece; a full overnight rest is the minimum. The tripe is ready when its surface yields faintly under light pressure and carries the scent of wine and herbs.
2. 2
   Remove the tripe from the marinade and pat each piece thoroughly dry with kitchen paper. Moisture left on the surface will prevent the flour from adhering and will cause the crust to lift during frying. The surface should feel dry and slightly tacky to the touch.
3. 3
   Set up three shallow dishes in sequence: flour, beaten egg, and fine breadcrumbs. Pass each tripe piece through flour (shake off excess), then beaten egg (coating every surface), then breadcrumbs, pressing firmly so the crumb adheres without gaps. For a double crust, repeat the egg and crumb stages once more. This is where the dish lives or dies: any gap in the panure will expose the tripe to direct heat, producing a greasy, uneven crust that fails to protect the soft interior. The finished pieces should be uniformly ivory-gold, with no bare patches visible.
4. 4
   Heat the clarified butter (or duck fat) in a wide, heavy pan to 170°C. Lower the breaded pieces carefully into the fat — they must lie flat and uncrowded. Fry for 4–5 minutes per side without moving. The crust is ready to turn when it releases cleanly from the pan and the underside is deep, even gold. After the second side, the exterior should be audibly crisp when tapped with a spoon.
5. 5
   While the tripe fries, prepare the gribiche. Press the yolks of the hard-boiled eggs through a sieve into a bowl and work in the mustard to a smooth paste. Emulsify with the oil, adding it in a thin stream while whisking. Fold in the finely chopped egg whites, capers, cornichons, and herbs. The sauce should be sharp, creamy, and spoonable — taste it against the richness of a breadcrumb and adjust acidity if needed.
6. 6
   Lift the fried tripe onto a rack for no more than one minute to shed excess fat. Serve immediately: the crust shatters on the knife, while the interior is hot, soft, and slightly bouncy. Gribiche is served alongside in sufficient quantity to accompany every bite.