Heirloom chocolate cake

---------- Recipe via Meal-Master (tm) v8.05
  
       Title: Heirloom Chocolate Cake
  Categories: Cakes, Chocolate
       Yield: 12 servings
  
       2 c  All purpose flour; sifted
   1 1/4 ts Baking soda
     1/2 ts Salt
     3/4 c  Unsalted butter; room temp
       2 c  Brown sugar; firmly packed
       2 lg Eggs; room temp
       2 lg Egg yolks; room temp
       5 oz Unsweetened chocolate; melt
   1 1/2 c  Buttermilk; room temp
  
   Preheat oven to 350~. Butter bottoms of 3, 9" pans. Line
   bottoms with waxed paper.
   Mix: flour, salt and soda in small bowl. Cream: Butter in
   large bowl until light. Add: sugar gradually and beat until
   fluffy. Add eggs, one at a time beating well after each
   addition. Beat in yolks and then melted chocolate Mix in
   dry ingredients and buttermilk, alternately beginning and
   ending with dry ingredients. Divide between pans. Bake
   until wooden pick comes clean (about 25 minutes).
   Place on racks for 5 minutes. Unmold cakes using pointed
   knife to loosen sides, place on paper towel lined racks and
   cool completely. Peel parchment off cooled cakes. Place on
   platter: place 1 cake layer on platter add stripes of waxed
   paper under edges. Spread: 3/4 C frosting on top. Repeat
   for other layers. Remove: Waxed paper strips Add: Walnuts
   decoratively to top edge and center.
  
 -----