Cut the cleaned liver into small cubes. Heat the cream with the milk and simmer the liver in it for about 5 minutes, until it starts to dissolve a little. Puree everything and pass through a sieve.
Beat the egg yolks with pepper, salt, nutmeg and the Madeira. Carefully add the liver cream milk to the egg yolks and mix.
Pour the cream into small, heat-resistant molds, cover with foil and cook at 90 ° C in the steamer for about 40 minutes.
Let the cream cool down. Chill for approx. 2 hours.
To serve, spread a teaspoon of brown sugar on the surface of the cold cream and caramelize with a burner.
Serve the caramelized cream with the brioche and quince sauce.