Just noticed on twitter the comment of Jeroen Veldkamp at the Dutch Barista Competition where he confirms that Foodpairing is more and more used by Barista.
He even got 2 espresso where they added celery root. Well, celery root makes a Foodpairing with coffee if you look at the category of the vegetable.
Find here some more inspiration on Foodpairing and coffee.
When you apply the Foodpairing tree of coffee, you can obtain known combinations or surprising ones;