Potato Croquettes - Lidia

Ingredients

• 1 pound potatoes, preferably Yukon Gold
• 4 tablespoons unsalted butter
• salt
• Freshly ground white pepper
• Freshly ground nutmeg
• 3 large eggs
• 1/2 cup of chopped Italian prosciutto
• 1 tablespoon chopped fresh Italian parsley
• All-purpose flour
• 2 cups fine, dry breadcrumbs, or as needed
• 2 cups vegetable oil