Boil potatoes until done. Peel and place in mixing bowl, removing all dark spots beforehand. Beat with mixer on a higher speed for 2 3 min.
Mix sugar, nutmeg and flour. Mix in milk. Add melted margarine, syrup and vanilla, and mix until everything is thoroughly blended.
Pour in pie shell, and bake at 190ºC for about 45 minutes or until set (when filling doesn't stick to hand when touched).
Recipe courtesy of Morrison's Cafeterias.