Preheat your oven to 350°F (175°C). Grease the doughnut pan like you mean it.
In a bowl, whisk flour, sugar, soda, powder, cinnamon, and salt. Set aside like it’s your ex.
In another bowl, combine coffee, milk, oil, vanilla, and vinegar. Stir like you’re spilling tea.
Mix wet and dry until smooth. Don’t overmix—we’re not making rubber bands.
Spoon the batter into the pan, about ¾ full. Be generous, you’re worth it.
Bake for 12 minutes, or until golden and springy.
Cool for 5 minutes in the pan, then transfer to a rack.
For the glaze, whisk sugar, coffee, vanilla, and salt until smooth and sassy.
Dip cooled doughnuts face-first into the glaze like they just got back from vacation.
Let glaze set—or don’t. Live your life.