What does your favorite cake say about you?
Your choices and interests are a reflection of who you are. If you enjoy reading political articles, it is likely that you are interested in this field. Otherwise, why would you put the effort to continue learning more about it? The foods you like to eat can also define your personality. This is especially true when it comes to desserts. Your personality is defined more strongly by the dessert you choose to eat than any other food.
Let's look at the specific personality and cake. Everybody has their favourite cake flavours. Talk about the types of cakes you like and how they relate to your personality.