Best Banana-Choc Bread from The Vegetarian Kitchen by Prue Leith and Peta Leith

Ingredients

• 80 g self-raising flour
• 55 g buttermilk
• 125 g ripe banana (peeled weight), mashed
• 1 large egg
• 40 g dark chocolate, finely chopped
• ¼ tsp ground cinnamon
• ¼ tsp table salt
• ¼ tsp bicarbonate of soda
• 70 ml vegetable oil plus extra for greasing
• 100 g soft dark brown sugar, free from hard lumps
• 2 tsp cocoa nibs
• 2 tsp demerara sugar