Sift Sugar, Cornstarch, Salt, Cinnamon, Ginger and Nutmeg togeather. Mix this with pumpkin. Add Eggs, beaten, Melted Butter, Molasses and Milk. Add a dash of Lemon juice (if desired). Line a 9 inch pie pan. Pour in contents. Preheat oven and bake at 450 degrees for 15 minutes. Then reduce heat to 350 degrees and bake for anothe 50 minutes.