Potato Recipes | Chocolate Potato Doughnuts

Ingredients

• 3 sticks unsalted butter
• 1 Vanilla Bean
• 8 cups medium diced, peeled russet potatoes
• 2-1/2 cups granulated sugar
• About 4 cups whole milk
• 2 cups Dark chocolate chips
• 2 cups sweet chocolate chips
• 2 Tablespoons unsweetened cocoa powder
• 4 large eggs
• 4 cups All-purpose flour
• 4 cups pastry flour
• 1/4 cup baking powder
• 1 tablespoon baking soda
• 2 cups sour cream
• 1/2 cup buttermilk
• Cinnamon sugar as needed
• 4-1/4 cups whole Milk
• 4-1/4 cups heavy cream
• 20 large egg yolks
• 2 cups granulated Sugar