3 squares semisweet baking chocolate (more on this later...)
225g/9oz flour
200g/8oz sugar
1 teaspoon baking soda
1 teaspoon baking powder
1 pinch salt
2 eggs
50g/2oz soft butter cut into small bits
1 teaspoon vanilla
620ml/24 fl.oz plain yogurt
1 cup chocolate chips
Preheat the oven to 175C/350F. Grease a tube pan - 250x75mm. We don't own a tube pan, so thought we would make two loaves instead. This was perhaps our first mistake...
Cut up the chocolate and melt in a bowl over a saucepan of simmering water. I didn't know how large the "3 squares" should be, so we used a row (10g) Green & Blacks 70%, which in hindsight was not enough. This was perhaps our second mistake...
Mix the dry ingredients with a wooden spoon. Mix the wet ingredients with an electric mixer (including the cooled melted chocolate). Our butter wasn't particularly cold but it didn't mix up brilliantly with the wet ingredients (third mistake??). Slowly add the dry to the wet, stirring with a spoon to blend. Stir in one cup of chocolate chips (we used 100g bar Green & Blacks, broken into bits).
Pour batter into greased pan (in our case, pans...) and place in a preheated oven. Bake 45 mins or until a toothpick comes out clean. (I checked our smaller loaf tins after 30 (mistake number 4???) and removed them at about 40 mins, when a toothpick came out clean. But then they sank.) Let cool 30 mins before turning out onto a plate.