4 bananas, peeled, cut into chunks and frozen in a freezer bag or on a tray
1 tsp baking powder
110g/4oz dark soft brown sugar
3-4 tbsp caster sugar
75g/3oz chestnut flour, sifted
25g/1oz cocoa powder
pinch of salt
250g/9oz dark muscovado sugar
录 tsp vanilla essence
350g/12oz dark chocolate (55-60% cocoa solids)
110g/4oz fudge, roughly chopped
250g/9oz unsalted butter
110g/4oz butter
200ml/5floz buttermilk
175ml/6floz double cream
3 free-range eggs