Add two large eggs, beating on low until well mixed, then on high until mixture is fluffy like egg whites. Slowly add flour, salt and soda mixture until you reach cookie dough consistency. Add slowly, so dough does not get dry.
Less flour gives crispier cookies.
More flour gives a cake-like cookie. You may not use all of the dry mixture. Drop cookie-sized portions of dough on lightly greased cookie sheets. Bake at 375 degrees for 9 to 11 minutes, or until lightly golden.