Creole Chocolate Cake

Ingredients

• Cake
• 2 cups unsifted all-purpose flour
• 1 teaspoon baking soda
• 1/2 cup butter
• 1/2 cup salad oil
• 3 unsweetened chocolate squares
• 2 cups sugar
• 2 eggs, beaten
• 1/2 cup sour milk
• 1 teaspoon vanilla extract
• Filling
• 1 (5 1/3 ounce) can evaporated milk
• 3/4 cup sugar
• 1/4 cup chopped seedless raisin
• 1/2 cup chopped dates
• 1 teaspoon vanilla extract
• 1/2 cup chopped walnuts or 1/2 cup pecans
• 1/2 cup chilled heavy cream
• Frosting
• 1 (6 ounce) package semisweet chocolate pieces
• 1/2 cup sour cream
• 1 dash salt