A family dedicated to their fertile volcanic terroir

In my search for restaurants that put pure plants and fruit on a pedestal we wandered into the Spanish volcanic mountains.
The intricate dishes at  Les Cols ( ) evoke the location where the family's farm has stood for centuries; the volcanic La Garrotxa Natural Park around Olot.

What role do knives play? Should chefs sharpen their own knives? Templo del Filo in Peru has all the answers.