Good-Cooking - Amalgamation Cake

Ingredients

• 1 cup granulated sugar
• 3/4 cup butter
• 1/2 cup buttermilk
• 2 cups plain flour
• 1/2 cup raisins, ground
• 1/2 cup pecans, chopped
• 3/4 teaspoon baking soda
• 1/2 teaspoon cinnamon
• 1/2 teaspoon allspice
• 1/2 pint blackberry jam
• 8 egg whites (yolks go in the frosting)