Many raspberry cakes are actually vanilla cakes or other flavored cakes with with bits of raspberry in the cake batter. Others are cakes that have raspberry swirls or a layer of raspberry filling. (For instance, our White Chocolate Raspberry Pound Cake, White Chocolate Raspberry Cake, or Almond Raspberry Swirl Cake.) These are delicious cakes also, but they don't have nearly the amount of raspberry flavor as today's recipe, which is flavored with a raspberry reduction. Making a raspberry reduction allows us to have more raspberry flavor in our cake batter without having to add as much liquid.