What is a cake breaker?

It seems you're asking about a "cake breaker", but this term isn't commonly used in baking or culinary contexts. It's possible you're thinking of something else, or the term is specific to a certain region or culture.

To help me understand what you're looking for, could you please provide more context?

For example:

* Where did you encounter this term? (e.g., a recipe, a store, a conversation)

* What did you think it was used for? (e.g., to cut cake, to decorate cake, to mix cake batter)

* What kind of cake were you thinking about? (e.g., a birthday cake, a layer cake, a sheet cake)

With more information, I can better understand your question and provide a helpful answer.