CAKE/FILLING Cake: Cream butter, slowly adding sugar until light. Add eggs one at a time. Stir in remaining ingredients. Bake in buttered and floured 9 x 5 loaf pan at 325 degrees for 1-1/4 to 1 1/2 hours or until done. Cool in pan for 5 minutes before turning onto rack. Slice horizontally into three sections. Filling: Combine first four ingredients in blender until smooth. Fold in grated chocolate or strawberries. Spread evenly between layers. Frosting: Melt chocolate with coffee over very low heat. Beat in butter a small amount at a time. Continue beating until thick and of spreading consistency. Frost cake and garnish.