Heat oven to 375 degrees F. Grease and flour 8- or 9-inch square baking pan.
Sift flour, ginger, cinnamon, allspice, cloves, soda and salt into a bowl. Beat sugar, shortening in a second bowl until creamy. Beat in eggs, then molasses. Beat in flour mixture alternately with boiling water until blended. Pour into pan.
Bake at 375 degrees F, 25 to 30 minutes.
Cut in squares; pipe on bows. Makes 16 squares.