In a saucepan, cook potatoes in boiling water until tender; mash and set aside. Meanwhile, in a skillet, brown the beef; drain. Stir in the next nine ingredients. Simmer for 4-5 minutes. Stir in potatoes, parsley and chili sauce; remove from the heat. Place bottom pastry in a 9-in. pie plate; brush with mustard. Add the meat mixture. Top with remaining pastry; seal and flute edges. Cut slits in the top crust. Brush with milk. Bake at 450° F for 10 minutes. Reduce heat to 350° F. Bake 25 minutes longer or until golden brown.