* Glazed onions: Heat the butter with the sugar in a small saucepan. Add the onions and fry until light brown, turning throughout. Pour only enough beef broth to not completely cover the onions. Saute at a moderate temperature with the lid closed until soft, about 15 minutes, until the liquid has reduced to a syrupy thickness and the onionlets are coated with the dark sheen of the broth.
White onionettes: Sauté onionettes in butter without sugar, add beef broth and finish as above. White onions are used for fish stews, fish fricassee, gratinated fish dishes and as garnish.
The fish: Cut the carp diagonally into 4 portion pieces. Marinate with juice of one lemon, salt and pepper. Cook glazed onions and keep them ready for the garnish.
Melt the butter in an ovenproof dish, sprinkle in the shallots as well as the mushrooms, sauté lightly. Place the carp slices in the dish. Pour enough red wine to cover the carp pieces and add the bay leaf spice.
Cover with aluminum foil. Cook in the oven at 200 °C for about 15 minutes. Remove the pieces of fish and mushrooms and keep warm.
Pour the cooking liquid through a sieve into the saucepan, boil quickly at high heat to two thirds. Slightly thicken with flour butter. Away from the fire, fold a piece of fresh butter into the sauce. Put the pieces of fish on e