The Bonnotte potato, known as the world's most expensive potato, is grown in a limited area and harvested by hand, resulting in a cost of around 700 USD/kg. Grown on only 5% of the total land area, these potatoes are highly valued for their unique taste and rarity. Every year, a festival is held to celebrate these potatoes, and they are used in various dishes where the crust is not peeled off to maintain the potato's distinct flavor.