Weird question...
During the feast, there is a dish on the table that looks like a cake wrapped in bacon...with a duck on top...Is that something created just for the game or is that a real life dish(if it is a real food, what is its name)?
Probably just a model used for the game, not an actual dish. The developer probably has a lack of food models to use in the game (like many of the other VNs), so they use what they have available (or find funny). Like the running gag in this game with pancakes. There's literally no one alive who could eat pancakes literally everyday for multiple meals and be fine or not grow tired of it after a while lol.
Same goes with the steak and potatoes for breakfast they had one time. Just used what was available instead of finding/making a bacon and eggs model to use.