Chocolate espresso torte for passover

1 c  butter or margarine
      1 c  Sugar; + 1 t sugar
      1 c  Expresso; + 2 t expresso*
     16 oz Semisweet chocolate
      1 lg Package
      6    Eggs; plus
      6    Egg yolks
           Confectioners sugar; garnish
 
  NOTE: can use margarine if it is good quality and
  parve...if you're serving a dairy meal.
  *brewed expresso or very strong coffee.
  NOTE: This cake can be served at Passover; of course then
  you would use Passover Cake Meal to dust the pans not flour
  Preheat oven to 325 degrees. Grease 9" spring-form pan.
  Place wax paper on bottom of pan; grease and flour; set
  aside.
  Place butter, sugar and Expresso in the top of a double
  boiler and heat until sugar dissolve. Pour hot liquid over
  chocolate and stir until dissolved; set aside. Beat eggs
  and yolks until frothy; add to the chocolate mixture and
  pour into pan. Bake for one hour; edges should crack
  slightly. Remove from oven and cool; cover and refrigerate.
  Remove from pan and sprinkle with confectioners sugar.
  
  IMPORTANT: This cake is rich and has NO flour. It is almost
  as creamy as cheesecake. You should only serve tiny thin
  slices.  When you remove this cake from the oven it looks
  like it is NOT set; and it isn't.  It MUST go in the
  refrigerator at least a 12 hour period; so MAKE AHEAD of
  time.
 
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