Chocolate Swirl Coffee Cake * 1 cup sugar * 2 cups all-purpose flour * 1 teaspoon baking soda * 2 teaspoons baking powder * ½ teaspoon salt * 3 eggs * 1 cup sour cream * 2 teaspoons vanilla * ¼ pound butter * 1 small can or bottle chocolate syrup Topping * 1 teaspoon [...]