Mousse de Foie de Volaille — Chicken Liver Mousse

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Mousse de foie de volaille is a refined cold preparation in which sautéed chicken livers (Gallus gallus domesticus) are puréed with butter, bound with gelatin, and enriched with cream to produce a smooth, spreadable mousse of exceptional finesse. Begin with 500 g of fresh chicken livers, trimmed of all sinew, bile ducts, and discolored portions. Soak livers in cold milk for 2–4 hours at 2–4°C to draw out residual blood and temper any bitterness. Pat dry and sauté in clarified butter over high heat (200–210°C pan surface temperature) for 60–90 seconds per side, achieving caramelization on the exterior while maintaining a rosy-pink interior at 63°C. Deglaze the pan with 60 ml of cognac or Armagnac, flambé to burn off raw alcohol, and add 50 ml of reduced port. Transfer to a food processor with 150 g of softened unsalted butter (82% butterfat, European-style) and process until completely smooth, approximately 3–4 minutes. Pass through a fine tamis to eliminate any granular texture. Incorporate 8–10 g of bloomed sheet gelatin dissolved in 30 ml of warm stock at 40°C. Season with fine sea salt (8–10 g per kg), white pepper, and a trace of quatre-épices (0.5 g). Cool the base over an ice bath to 22–24°C, then fold in 200 ml of cream whipped to soft peaks. Transfer to a terrine or individual moulds lined with plastic film and chill for minimum 6 hours. The finished mousse should exhibit a pale mauve-brown color, a velvety texture that melts instantly on the tongue, and a clean liver flavor without any metallic or ferrous aftertaste.

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