Preheat oven to 350.Blend eggs, sugar, shortening, molasses,and spices in large bowl.
Dissolve soda in hot water ,stir in. Add flour and blend well. Add boiling water and blend a few seconds.Batter will be thin.Pour in greased 9x13 pan, and bake for 35-40 minutes depending on how hot your oven is. Will spring back when done.