01 -
Preheat oven to 175°C. Grease a 23 cm round cake pan to prevent sticking and promote even baking.
02 -
In a medium bowl, whisk together flour, baking powder, ground cinnamon, and salt to ensure even distribution.
03 -
Using an electric mixer, beat softened butter and granulated sugar for 3-4 minutes until the mixture is light and fluffy, incorporating air for texture.
04 -
Add eggs one at a time to the creamed butter and sugar, mixing thoroughly after each addition. Blend in vanilla extract until smooth.
05 -
Gently fold sour cream into the batter until just combined, then gradually add cooled brewed coffee, mixing carefully to maintain batter texture.
06 -
Stir in coarsely chopped roasted pistachios evenly throughout the batter to impart nutty flavor and crunch.
07 -
Pour batter into prepared pan and smooth surface. Bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.
08 -
Allow cake to cool slightly in the pan before removing. Serve warm or at room temperature for optimal flavor and texture.