Lobster Thermidor Gratinée

Lobster Thermidor was created at the Parisian restaurant Maison Maire (Chez Marie) in 1894 and named after Victorien Sardou's play *Thermidor*, which had premiered at the Comédie-Française three years earlier. The dish became a classic of French grande cuisine almost immediately, and it has stayed there because nothing else quite delivers the combination of an intensely flavored lobster cream sauce, bubbling Gruyère crust, and the theatrical arrival of the lobster in its shell.

The sauce is made from the lobster's own shells — simmered into stock, then reduced with cognac, white wine, and cream. The Dijon mustard at the end is non-negotiable; it provides the sharpness that prevents the richness from being overwhelming. Fill the shells, add cheese, and broil to order.

Ingredients (serves 12 as a plated event appetizer): - 6 live lobsters (approximately 1 lb 12 oz each), split lengthwise and cleaned (ask your fishmonger to do this) - 4 tablespoons unsalted butter - Flaky sea salt and white pepper - Fresh tarragon and parsley for garnish - 5 ¼ oz Gruyère or Parmesan, grated (for the gratin)

Thermidor Sauce: - 3 shallots, very finely minced - 2 garlic cloves, minced - ⅞ cup dry white wine (Chablis or Burgundy) - ½ cup cognac or brandy - 1 ¼ cups fish stock or lobster bisque (reduced from the lobster shells) - 1 ¼ cups heavy cream - 3 tablespoons unsalted butter - 1 tablespoon Dijon mustard - 2 tablespoons fresh tarragon, finely chopped - 2 tablespoons fresh parsley, finely chopped - 1 teaspoon smoked paprika - Pinch of cayenne - Salt and white pepper

Lobster Preparation: Remove the tail and claw meat from the split lobsters. Cut the tail meat into medallions and roughly chop the claw meat. Reserve all shells. Keep the lobster shells for plating — they are the serving vessels.

Sear the lobster meat briefly in foaming butter, 30–45 seconds per side, until just barely cooked. Season with salt and white pepper. Set aside.

Make a lobster stock by simmering the reserved shells in water for 20 minutes, then strain and reduce to 1 ¼ cups.

Sauce: Sauté shallots and garlic in butter until soft and translucent. Add cognac and flame or reduce. Add white wine and reduce by two-thirds. Add lobster stock and reduce by half. Add cream, simmer 10 minutes until sauce coats the back of a spoon. Whisk in Dijon mustard. Add tarragon, parsley, paprika, and cayenne. Season well.

Fold the lobster meat into the sauce gently — the sauce should coat every piece generously.

Gratinée: Spoon the lobster and sauce back into the reserved shells. Cover generously with grated Gruyère. Broil under a hot broiler for 3–4 minutes until the cheese is deeply golden, bubbling, and spotted with brown.

Serve immediately on heated plates with fresh tarragon and parsley.

Pro Tips: The Dijon mustard in the sauce is non-negotiable for Thermidor — it provides an essential sharpness that cuts through the cream's richness and gives the sauce its characteristic depth. The sauce should be generously applied — a Thermidor with too little sauce is a dry, disappointing dish. Have the shells ready and sauce made up to 2 hours ahead; fill and gratinée to order.