The Princess Cake consists of sponge cake, whipped cream, pastry cream and, most importantly, marzipan. The marzipan, the outer layer which gives the cake it’s trademark green or pink appearance, is a delicious concoction made from sugar and almond meal. Many Princess Cakes, like those served at Gelson’s, have a thin layer of jam, although this technically qualifies them as an Opera Cake. So why the misnomer? Because operas are boring and who doesn’t like being a princess?