Split the chicken down the middle. Well open. Pass two skewers longways to prevent the chicken from curling. Take and break one very fresh egg. Beat well. Add to it a little salt and black pepper, one ounce of melted butter, one tea-spoonful of Worcester or other sauce, and one teaspoonful of mixed mustard. Mix together. With a brush glaze the whole chicken with the mixture. Then place the breadcrumbs all round. Butter the bag well all over the inside. Place chicken in it. Seal up, and place on the grid. Be very careful not to tear the bag with the skewers. Allow thirty-five to forty minutes in a hot oven (350 Fahr.).