Chocolate Old Fashioned Cake Donuts | The Gourmandise School

Ingredients

• 4-1/4 cups all-purpose flour (510g)
• 1/2 cup natural cocoa powder (50g)
• 1 tbsp baking powder
• 3/4 tsp baking soda
• 2 tsps Kosher salt
• 1.25 oz unsalted butter, at room tempereature (35g)
• 1 cup granulated sugar (200g)
• 1 egg
• 2 egg yolks
• 1-1/2 cups sour cream (350g)
• 2 cups powdered sugar
• 2-3 tbsp warm water
• 1 tsp vanilla extract