Preheat oven to 350. Lightly oil a 9" springform pan.
In a large bowl, cream butter until pale and fluffy. Add sugars, egg white and vanilla and cream well. Add almond flour, whole wheat flour, unbleached flour, baking powder and cocoa, stirring until combined.
In a small bowl, stir baking soda into yogurt. The chemical reaction will cause the mixture to fizz up a little. This is fun. Add yogurt and coffee to batter.
Pour into springform and bake for 45 minutes, or until cake is fragrant and top springs back when touched.
Remove from oven and pour chocolate chips over top. Wait about 3 minutes for the chocolate chips to soften, then spread a layer over top of cake. Chocolate will harden as it cools, forming a glaze.