This recipe yields delicious cinnamon vanilla cake doughnuts, featuring a tender, moist interior and a golden, crispy exterior. Prepared with buttermilk and yogurt, the dough is quickly mixed, cut, and deep-fried to perfection. They are ideal for a comforting breakfast treat or a delightful snack, offering a classic flavor profile.
Achieving the perfect texture for these cake doughnuts relies on precise oil temperature and minimal handling of the dough. Maintain your frying oil between 350-360°F (175-180°C) for optimal browning without excessive oil absorption or burning. Overmixing the dough will develop gluten, leading to tough doughnuts; mix only until just combined. For superior results, grate the frozen butter directly into the flour mixture, then quickly work it in, ensuring even distribution and a tender crumb. Always drain fried doughnuts on a wire rack to allow air circulation and prevent sogginess. Consider tossing them in a cinnamon-sugar mixture while warm for a classic finish, or a simple vanilla glaze once cooled.