Tête de Veau — Calf's Head with Sauce Gribiche

Ingredients

• 1 Boned calf's head, with tongue, prepared by the butcher; rolled and tied into a cylinder with butcher's string
• 2 litres Cold water, acidulated with lemon juice or white vinegar, for soaking
• For the blanc
• 3 litres Water
• 1 tbsp Plain flour, whisked into the cold water before heating
• 1 Lemon, juice only
• 1 tsp Fine salt
• 1 Mirepoix, onion, carrot, celery in rough dice
• 1 Bouquet garni, bay, thyme, parsley stalks, tied
• For the brain
• 1 Calf's brain, membrane removed, soaked in cold water until clean
• 1 litre Court-bouillon, lightly acidulated, seasoned
• For the sauce gribiche
• 3 Eggs, hard-boiled; yolks only for the emulsion, whites reserved for garnish
• 1 tbsp Dijon mustard
• 200 ml Neutral oil, such as grapeseed or sunflower
• 1 tbsp Capers, drained and roughly chopped
• 2 tbsp Cornichons, finely sliced
• 1 tbsp Flat-leaf parsley, finely chopped
• 1 tbsp Tarragon leaves, finely chopped
• 1 tbsp Chervil, finely chopped

Method

1. 1
   Place the boned, rolled calf's head in a deep vessel. Cover with cold acidulated water and refrigerate for 24 hours, changing the water once. The soak is complete when the water runs pale and the skin shows no trace of blood — the colour should be an even, clean white.
2. 2
   Lift the head from the soak, drain, and plunge into a large pot of rapidly boiling unsalted water. Blanch for 5 minutes. Refresh immediately under cold running water and scrape the surface with a stiff-bristled brush or the back of a knife to remove any remaining hair or impurities. The skin should feel smooth and uniform to the touch.
3. 3
   Prepare the blanc: whisk the flour into the cold water in your poaching vessel until no lumps remain, then add the lemon juice, salt, mirepoix, and bouquet garni. Lower the rolled head into the liquid. Bring to temperature and hold at a steady 85°C — never a boil. This is where the dish lives or dies: a rolling boil will dissolve the skin from the structure and collapse the roll; a gentle, trembling poach converts the collagen to gelatin and preserves every layer intact. Hold at 85°C for 2.5 to 3 hours. The head is done when a skewer passes through the thickest part of the skin without resistance and the cylinder yields gently under the thumb.
4. 4
   While the head poaches, bring the court-bouillon to a gentle simmer. Add the cleaned brain and poach for 15 minutes. The brain must not boil. It is ready when it holds its shape under a gentle probe but the interior remains creamy — it should not feel firm or grainy.
5. 5
   Prepare the sauce gribiche: mash the 3 hard-boiled yolks with the Dijon mustard to a smooth paste. Add the neutral oil in a thin, steady stream, working the mixture continuously as for mayonnaise, until a thick, cohesive emulsion forms. Fold in the capers, cornichons, parsley, tarragon, and chervil. The sauce should carry a sharp, piquant aroma and taste assertively of mustard and herb — it must stand against extreme richness.
6. 6
   Remove the head from the blanc and allow it to rest briefly — enough to firm slightly for clean cutting. Remove the string. Slice into rounds of 2 cm. Each slice should reveal a mosaic of white skin, tongue, and cheek meat in the same plane. Arrange on warmed plates, place a portion of brain alongside, and nap both generously with sauce gribiche. The plate must be hot; the head cools rapidly.