Mix butter, sugar, flour and cinnamon,ginger, nutmeg and salt.Set aside 1 cup.
To what remains, add egg, molasses, cup of sour milk in which the teaspoon of sada has been dissolved.Beat thoroughly and pour in baking pan.Crumble remaining dry mixture over the top and spread evenly. Bake 30 minutes in a moderate oven.
Final Comments
Sour sweet milk by adding 1 tablespoon vinegar or lemon juice.