Preheat oven to 375°F. In large bowl, combine flour, baking soda, salt and spices. In large saucepan, melt shortening; cool slightly. Stir in sugar, molasses and egg; mix well. Add 2 cups flour mixture; mix well. Turn mixture onto lightly floured surface. Knead in remaining flour mixture by hand. Add additional flour, if necessary, to make firm dough. Roll out on a lightly floured surface to 1/4-in. thickness.