Stir dry ingredients together. Add the pine nuts and butter and cut into the flour mixture. Stir in the eggs and add just enough cream to make a stiff dough. Put the dough on a floured board and pat it out into a circle about 1/4-1/2 inch thick. Cut into wedges and place wedges on a cookie sheet at least one inch apart. Bake at 400 degrees for 15 minutes or until nicely browned. Sprinkle with additional cardamom and serve with plum jam.