Jam Cake

Ingredients

• 1/2 cup margarine, softened
• 1 cup light brown sugar
• 3 eggs, separated
• 1 teaspoon baking soda
• 1 cup jam
• 1/4 cup sour milk (add 1/4 teaspoon vinegar to fresh milk)
• 2 cups flour
• 1 teaspoon baking powder
• 1/2 teaspoon cinnamon
• 1/2 teaspoon nutmeg
• 1/8 teaspoon cloves
• 1/8 teaspoon ground ginger