Old-fashioned Raisin Cake Ingredients: 2 cups water 1 cup raisins 1 cup brown sugar 1/2 cup unsalted butter 2 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon ground cinnamon 1/2 teaspoon vanilla 1/2 teaspoon salt 2 eggs 1/2 cup chopped walnuts (optional) Instructions: