• Let’s get into the nitty-gritty—here’s how to whip up these delightful donuts step by step.

Step 1: Prepare the Dough

• Start by whisking the egg yolks and butter in a large mixing bowl until they’re well combined. Pour in the sour cream and mix it in. You’ll want the mixture to be creamy and smooth. Sifting in the cake flour, baking powder, nutmeg, cinnamon, salt, and sugar, gently fold everything together until you see no dry flour. It’s important not to overmix; you want a soft dough that you can handle.

Step 2: Shape the Donuts

• Once your dough is ready, sprinkle some flour onto your countertop. Transfer the dough onto the floured surface and roll it out to about ½ inch thickness. Grab a donut cutter or two cookie cutters—a larger one for the outer circle and a smaller one for the hole—and cut out your donuts. Don’t discard the holes! You can fry those too for donut holes.

Step 3: Heat the Oil

• In a deep skillet or pot, heat your canola oil. Use a thermometer to check the temperature—around 350°F (175°C) is ideal for frying. If you don’t have a thermometer, drop a small piece of dough into the oil. If it sizzles and rises to the surface, you’re good to go.

Step 4: Fry the Donuts

• Carefully slide a few donuts into the hot oil. Don’t overcrowd the pot. Fry for about 2-3 minutes on each side, or until they are golden brown. Aim for that perfect coloration! Use a slotted spoon to transfer the cooked donuts to a plate lined with paper towels.

Step 5: Prepare the Glaze

• While your donuts cool slightly, mix your glaze. In a bowl, whisk together the sifted powdered sugar, corn syrup, salt, hot water, and vanilla extract until smooth. Dip each donut into the glaze, allowing any excess to drip back into the bowl. Place them on a wire rack to set.