01 -
Pour 2 cups apple cider into a saucepan, simmer over medium heat until reduced to approximately 1/2 cup, stirring occasionally to prevent burning. Allow to cool completely before use.
02 -
In a medium bowl, whisk together flour, baking powder, baking soda, ground cinnamon, ground nutmeg, and salt until evenly combined.
03 -
In a large bowl, beat softened unsalted butter and granulated sugar until light and fluffy using an electric mixer or vigorous hand mixing.
04 -
Add eggs one at a time into the creamed mixture, beating well after each addition. Stir in cooled reduced apple cider, buttermilk, and pure vanilla extract until combined.
05 -
Gradually fold the dry ingredients into the wet mixture until just incorporated; dough should be soft and slightly sticky. Avoid overmixing.
06 -
Cover the dough and refrigerate for a minimum of 1 hour to firm for easier handling and improved texture.
07 -
Lightly flour the workspace and roll out dough to approximately 1/2 inch thickness. Use a doughnut cutter or two round cutters of differing sizes to cut out doughnuts and holes. Reroll scraps as needed.
08 -
In a heavy-bottomed pot, heat vegetable oil to 350°F (175°C), maintaining the temperature with a deep-fry or candy thermometer for consistent frying.
09 -
Fry doughnuts in small batches, 1 to 2 minutes per side until golden brown, flipping once. Use a slotted spoon to transfer fried doughnuts onto paper towels to drain excess oil.
10 -
Mix granulated sugar with ground cinnamon in a shallow bowl until well combined.
11 -
While still warm, toss fried doughnuts and holes in the cinnamon sugar mixture to ensure an even, generous coating.