Poppy seed cake is a type of cake that is holds a perfect mixture of lemon and poppy seeds. These poppy seed cakes are widely appreciated when served heavy whipped cream or a bowl of fresh strawberries. Moreover, these cakes can also be served with lightly toasted sliced almonds. The main ingredients need while making poppy seed cake are cake flour, baking powder, baking soda, salt, whole milk, vanilla bean, buttermilk, poppy seeds, lemon juice, unsalted butter, granulated sugar and egg whites.