Preheat oven to 160 degrees. Grease and flour a small loaf pan.

Sift the flour, baking powder and salt and set aside.

Melt butter and chocolate over the top of boiling water. Allow to cool a bit.

Whisk in the sugar till dissolved.

Beat in the eggs, one at a time.

Add in the dry ingredients and whisk till combined. Stir in the pistachios.

Bake in the oven for 25-35 minutes till done, ie. a skewer comes out clean from the center.

Cool in the pan for 10 minutes.

Flip onto a cooling rack to cool completely. Slice and serve with a cup of black tea or coffee or just as a snack!