Nonstick spray2 cups (260 grams) cake flour1½ cups (195 grams) all-purpose flour1 tablespoon (14 grams) baking powder½ teaspoon baking soda1½ teaspoons kosher salt¾ cup (180 grams) sour cream ...

In a large bowl, whisk together flour, cocoa, baking soda, nutmeg, and salt. In a medium bowl, whisk together eggs and sugar. Add coffee, yogurt, vanilla, and 2/3 cup olive oil and whisk until smooth.