Ingredients:

• 1 pound (3 to 4) medium Yukon Gold potatoes, peeled and quartered
• 2 tablespoons kosher salt
• 3 tablespoons unsalted butter, room temperature
• 1/2 teaspoon freshly ground black pepper, or to taste
• 1/2 cup finely grated Parmesan cheese
• 2 large egg yolks
• 2 tablespoons finely chopped chives
• For breading and frying
• 1 cup fine breadcrumbs
• 2 large egg whites
• Vegetable or canola oil, for frying
• Salt, to taste