Add chicken broth, marjoram (or oregano), nutmeg and pepper. Cook and stir until mixture thickens.
4 Add chicken and sherry and heat thoroughly.
5 Place in uncooked deep dish pie shell. Cover with pie crust and crimp edges. Cut vents in crusts.
6 Beat egg yolk and water and brush over crust.
7 Bake at 425 for 20 minutes or until crust is browned.
8 Cool 5-10 minutes before serving.