Coffee and cinnamon cake

1. First, prepare the coffee using the KitchenAid coffee maker. Once ready, set aside 100 ml.
2. Attach the scale and sifter attachment to the stand mixer. Sift the flour, baking powder, and salt on speed 4. Set aside.
3. Combine the butter and sugar in the bowl of a stand mixer fitted with the flat beater and mix on speed 4 for 1 minute.
4. Add the eggs, sour cream, coffee, and vanilla extract. Mix for 30 seconds on speed 4.
5. Combine the wet ingredients with the dry ingredients and mix on speed 2 until combined.
6. Pour the mixture into a baking pan lined with parchment paper.
7. Streusel topping: Place the all-purpose flour, sugar, cinnamon, and butter in the bowl of a stand mixer fitted with the flat beater. Mix until crumbly.
8. Spread the streusel over the cake batter.
9. Bake in a preheated oven at 170°C (340°F) for 1 hour. After 1 hour, insert a toothpick into the center of the cake; if it comes out clean, the cake is ready. Let the cake cool for 20 minutes before cutting.