Duck Liver Mousse Recipe

Prepare livers

Rinse the duck livers under cold water and pat dry with paper towels. Trim away any connective tissue, veins, or greenish/gray bits and cut larger lobes into uniform pieces (about 1-inch). Keep chilled until ready to cook.

Sweat shallots

In a medium skillet over medium-low heat, melt 2 tablespoons of the butter. Add the minced shallot and a pinch of salt and sweat gently until translucent but not browned, about 4–6 minutes. Add the minced garlic and thyme and cook 30 seconds until fragrant.

Cook livers

Increase heat to medium-high, add the trimmed livers to the pan in a single layer and sear for about 1–1.5 minutes per side until the exterior is browned but the center remains slightly pink (internal temp ~125–130°F / 52–54°C). Avoid overcooking to keep mousse silky. Remove pan from heat.

Flambé (optional) & deglaze

If using alcohol, carefully add the brandy to the hot pan and either allow to ignite briefly (stand back) or stir to deglaze and scrape up browned bits. Let the alcohol reduce for 30–60 seconds. Allow mixture to cool slightly (2–3 minutes).

Blend the mousse

In a food processor or high-speed blender, combine the cooked livers, shallot mixture, egg yolks, the remaining softened butter (about 10 tablespoons), heavy cream, salt, pepper, and optional allspice or nutmeg. Process in short pulses until smooth and homogeneous, about 1–2 minutes. Scrape down sides and process again to achieve a silky texture. Taste and adjust seasoning.

Strain

Pass the blended mixture through a fine-mesh sieve into a bowl to remove any fibrous bits for an ultra-smooth mousse. Use a spatula to press it through, then discard solids.

Tempering & baking (optional for stability)

Preheat oven to 275°F (135°C). Divide the mousse into ramekins or a small terrine (enough for about 4–6 servings). Place ramekins in a roasting pan and pour hot water into the pan to come halfway up the sides (bain-marie). Bake 20–25 minutes, or until mousse is just set (center slightly jiggly). Alternatively, for an unbaked mousse, chill until firm (see chilling step).

Seal with butter

If baked or transferred to jars, pour the warmed clarified butter over the top of each cooled mousse to create an airtight seal (about 1–2 tablespoons per ramekin). This helps preserve and gives a glossy finish. Chill uncovered until butter sets, then cover and refrigerate at least 4 hours or overnight to develop flavor and firm up.

Serve

When ready to serve, remove mousse from refrigerator 15–20 minutes beforehand to soften slightly. Serve with toasted slices of country bread or crackers, cornichons or pickled shallots, and garnish with fresh thyme sprigs.

Storage

Properly sealed with butter and refrigerated, the mousse will keep 3–4 days. For longer storage, freeze portions (without the butter seal) up to 1 month; thaw in refrigerator before sealing and serving.