This is for using a stand mixer with a dough hook. For making by hand instructions, see notes.
Heat the milk in the microwave until warmed to 110°F. Pour the yeast on top and let it sit for 10 minutes. This will let the yeast be foamy and activate.
1 cup Milk, 2 1/4 tsp Active dry yeast
In a mixing bowl, mix the flour, cocoa powder, sugar, and salt. Add in the cubed butter. Use a pastry kneader or your hands to knead the butter into the flour. It should be the size of a pea.
4 cups All-purpose flour, 1/2 cup Unsweetened cocoa powder, 1 tsp Salt, 1/4 cup White granulated sugar, 10 TBSP Unsalted butter
Add in the milk/yeast and lightly beaten eggs. Mix on low speed until a dough starts to form. Then, switch to medium speed and knead for 5 minutes. The dough will be very soft and slightly tacky.
2 Large eggs
Preheat the oven to 200°F. Spray a large bowl with nonstick spray. Place the dough in the bowl and cover with a kitchen towel. Place in the oven, turn off the oven, and crack open the door. Let it rise for 1 hour until doubled in size.