Last December the largest truffle fair in Spain was in Teruel, it is called FITRUF. We helped to create this infographics for the main newspaper in Teruel, who made an special number about truffles and truffle growing.
Apologize but it has not been edited in english language.
Every year new countries join the club of the ones who have been successful growing black truffles, like Israel in 2017.
Happy New Year from Barcelona!
Marcos S. Morcillo