If you had the chance to try any Pokemon made by you or a top chef cooked to perfection and have it be considered a delicacy around the world, which Pokemon would be the most appetizing to you?
For me personally, I think Miltank would be the most appetizing as it is a cow and steak is one of the most popular types of meat in the world and also one of my favorite food!
My logical argument, I always guessed that they have like perfectly legit hardcore battles where Pokemon use magical powers to nearly kill each other, people use Pokemon for all traditional activities like farming, dairy or helping with professional activities like fire-fighting, buddies for cops etc. It is highly plausible that people use Pokemon for food as well. Kind of like our society.
What I chose to believe is that there are regular plants and animals exist in the world that are consumed as food. In the first season of anime, they showed regular fish, so I think there are also regular animals that exist in the world of Pokemon. Same like there are normal plants and trees and Grass type Pokemon. That or the tech is highly advanced as seen in various parts of the anime to create perfect meat substitutes which replaces steak, fish etc