How to make
Clean the carp, wash it, salt it well and soak it in vinegar for 30 minutes. Sauté the finely chopped onions with the carrot, add the cleaned and sliced mushrooms, top with half of the wine and a little water and then flavor with spices and sugar.
Once the prepared stuffing has cooled slightly, mix it with crushed eggs and breadcrumbs. Fill the fish with the stuffing, sew it up and brush it with a mixture of 2 tablespoons of breadcrumbs and butter. Put it in a tray with the onion rings, to prevent sticking.
Pour in the rest of the wine in the tray and add a little warm water. Put it to bake for about 1 hour in a moderate oven, covered with foil. Remove the foil and bake finished.