To make these donuts, you need:-Bread flour-Large egg-Warm milk-Unsalted butter-White granulated sugar-Salt-Instant yeastFor the chocolate custard:-Chopped chocolate-Whole milk-Vanilla extract-Cocoa powder-Egg yolks-Large egg
Here's What You Need
For the chocolate custard:
-Large egg-Cornstarch-Salt-White granulated sugar-Unsalted butter
To begin, whisk warm milk with the egg and add the yeast. Stir until dissolved. Then, add the salt, flour, and sugar to the mixture. Use a spatula to stir until combined and then knead with your hands.
Now, add butter and work it in with your hands. Then, move the dough ball to an oiled bowl and cover with plastic wrap. Set in a warm space and let it rise for 3 hours. After, put the dough on a flat floured surface and knead for 2 to 3 minutes.
To make the chocolate custard, mix the cocoa powder, salt, cornstarch, egg yolks, egg, and sugar in a large bowl using an electric or hand mixer. Beat until it is smooth and set aside.
Then, pour the vanilla and milk into a medium saucepan and heat them over medium-high heat. Remove it from the heat when it starts to boil. While WHISKING CONSTANTLY, add the hot milk to the egg mix.
Pour it back into the pan and continue whisking over medium heat for about 2 to 5 minutes, until it is thick. Lower the heat and add the chopped chocolate, whisking until melted.
Then, remove it from the heat, stir in the butter, and pour it into a bowl. Cover with plastic wrap, making sure the wrap is laying right on top of the custard to prevent skin. Let it chill for 2 to 4 hours. .
Meanwhile, punch down the dough and move it to a floured surface, folding it several times before cutting it into 8 pieces. Shape into balls and put them on a parchment paper-covered pan. Let them rise for 30 to 40 minutes.
Next, fill a deep pan with about 2 inches of oil and heat it on medium-low until it is 350 degrees F. Pour a few donuts at a time, using 1/3 to 1/4 cup of batter. Fry for 2 minutes on each side until they are golden brown.
Once they are cool, poke a hole in the side of one donut with a chopstick and roll them in sugar on each side. Finally, pour the custard into a piping bag and fill the hole until there is just a dot on the surface.