Preheat oven to 180C and prepare a 9-inch square pan or 2 standard loaf pans

Sift together the flour, cocoa powder, baking powder and soda. Whisk in the sugar and salt. Set aside

In a separate bowl, whisk together all the wet ingredients

Mix wet mixture into the dry mixture until smooth. Pour into the prepared pan, spoon pistacchio cream onto the top and swirl it around with a skewer

Bake for about 30 minutes