Oeufs en Cocotte (Baked Eggs)

Heat the oven to 180°C. Select four ceramic or porcelain ramekins of 150–180 ml capacity. Butter each ramekin generously — base and sides completely coated; insufficient butter causes the set white to tear when the spoon is inserted. If using a base layer, place one tablespoon of duxelles, wilted spinach, or smoked salmon in each ramekin now. The ramekin is ready when the butter has no bare patches and the base filling, if used, lies flat.

Crack one egg into each ramekin without breaking the yolk. Spoon 1–2 tablespoons of heavy cream over the top of each egg. Season the cream lightly with salt and white pepper; do not apply salt directly to the yolk — osmotic draw will dimple and dry its surface before the oven is reached. The cream should form an even, pale film over the yolk and white.

Place the ramekins in a deep roasting tin. Pour boiling water into the tin to come halfway up the sides of the ramekins. Allow the water to settle for one minute so that it drops to approximately 85°C — the surface should steam steadily but not boil violently. Hold a hand above (not in) the water: it should feel very hot and steamy, without eruptions. A boiling bain-marie overheats the ramekin sides and produces rubbery whites before the yolk has time to warm. Cover the tin loosely with foil to trap steam and keep the surface moist.

This is where the dish lives or dies. Slide the tin into the oven and bake for 10–14 minutes, checking from 10 minutes onward. Remove the ramekins 1 full minute before the yolk appears to reach the desired set — the ceramic ramekin is a heat reservoir and continues cooking the egg after the oven door opens. An egg removed at 11 minutes will reach correct doneness on the plate at 12 minutes; left until 12 minutes in the oven, it will be overdone by the time it reaches the table. Open the oven and gently push one ramekin: the white and yolk should move as a single cohesive unit, while the yolk, if tapped, moves independently of the set white — confirming the white is firm and the yolk remains liquid. If the entire contents slosh as liquid, the white is not yet set; return to the oven for 2 more minutes. If there is no movement at all, the yolk has set and the preparation is overdone.

Lift each ramekin from the bain-marie and dry the base. At correct doneness, the cream on top will have set to an ivory, barely trembling film; the white beneath it will be fully opaque; the yolk will be just visible as a round, slightly elevated dome beneath the cream — not sunken flat, which indicates it has set solid. Serve immediately in the ramekin, on a folded napkin on a small plate.