01 -
Preheat your oven to 175°C (350°F). Grease and line an 8-inch round cake pan with parchment paper for easy removal.
02 -
In a large mixing bowl, whisk together the yogurt, vegetable oil, and vanilla extract. Add the egg yolks and sugar, stirring until smooth and well combined.
03 -
In a separate bowl, sift the all-purpose flour, baking powder, and salt. Gradually add the dry mixture to the wet ingredients, stirring gently to combine.
04 -
In a clean bowl, whisk the egg whites and cream of tartar (if using) until soft peaks form. Gradually add a tablespoon of sugar and continue whisking until stiff peaks form.
05 -
Gently fold the whipped egg whites into the cake batter in two or three additions. Be careful not to deflate the batter to maintain its fluffiness.
06 -
Pour the batter into the prepared cake pan and smooth the top. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean and the cake is golden brown.
07 -
Allow the cake to cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely.
08 -
In a chilled mixing bowl, beat the heavy whipping cream, powdered sugar, and vanilla extract until stiff peaks form.
09 -
Once the cake has completely cooled, top it with the whipped cream. Optionally, garnish with fresh berries or a dusting of powdered sugar.