Is this a big round cake with a yellow shell outside? If the cheese inside is bitter, that's right. It's called Bo Huang, also called Gotha cheese. This is usually used by foreigners to accompany meals or cook. If it is used by China people, it is also used to make pizza. Gotha cheese and mozzarella cheese are mixed together to bake pizza. Just throw away the skin. That's wax skin. This is for preservation. Don't eat. Let me show you a photo.