Once upon a time in the French countryside, there was an old pastry chef who was well known for her unique creation (of which I forgot the name), that, even 40 years later, my father still praises.
The recipe was only known by the pastry chef, even though the famous local restaurant chef (Georges Blanc, now 3 Michelin stars, at least 2 stars at the time) begged her to sell him the secret, whatever the price. She said, "my recipe will follow me into the grave". And it did.
TL;DR: come in Bresse, best food ever.