Soak the gelatine for one hour in half a cupful of cold water. Put the butter in a frying-pan, and when hot, add the flour. Stir until smooth and brown, and add the stock and seasoning. Simmer ten minutes; strain upon the game, and simmer fifteen minutes longer.
Beat an egg and add to the gelatine. Stir this into the game and sauce and take from the fire instantly. Place the stew-pan in a basin of cold water, and stir until it begins to cool; then turn the mixture into a shallow baking pan, having it about an inch thick. Set on the ice to harden.
When hard, cut into cutlet-shaped pieces with a knife that has been dipped in hot water. When all the mixture is cut, put the pan in another of warm water for half a minute. This will loosen the cutlets from the bottom of the pan. Take them out carefully, cover every part of each cutlet with force-meat, and set on ice until near serving time.
When ready to cook them, beat the two eggs with a spoon. Cover the cutlets with this and the crumbs. Place a few at a time in the frying basket, and plunge them into boiling fat. Fry two minutes. Drain, and place on brown paper until all are cooked. Arrange them in a circle on a hot dish. Pour mushroom sauce in the centre, garnish with parsley, and serve.
Poultry cutlets can be prepared and served in the same way.