Good-Cooking - Singing Cake

Ingredients

• 1 cup butter
• 2 cups firmly packed brown sugar
• 3 eggs, separated
• 2 squares bitter chocolate, melted
• 1 cup raisins
• 2 teaspoons cinnamon
• 1 teaspoon cloves
• 4 cups sifted flour
• 1 cup strawberry jam
• 1 cup chopped nuts
• 2 teaspoons baking powder
• 1 cup buttermilk