Ingredients
225g very soft butter, plus extra for greasing
225g caster sugar
225g self-raising flour
4 large eggs, beaten
2 tbsp milk
3 tbsp cocoa powder, sifted
1 large orange, zest and 1 tbsp orange juice
a few drops orange food colouring
50g orange chocolate broken into pieces
Method
- Heat oven to 180C/fan 160C/gas 4. Grease and line the base of a loaf tin (8 x 21cm/ 2lb) with baking parchment. Beat the butter, sugar, eggs and flour together in a large bowl with an electric whisk or in a food processor until lump free.
- Split the mixture into two bowls, beat the milk, followed by the cocoa powder into one. Beat the orange juice, zest and orange food colouring, if using, into the other.
- Spoon alternate dollops of the mixture into the cake tin, then use a skewer to create a marble pattern by dragging it through the mixture in swirls. Make sure you don’t overmix or you won’t see the pattern. Smooth the surface if necessary.
- Bake the cake for 45 – 55 mins until golden and risen, and a skewer poked in comes out clean.
- Leave the cake in the tin to cool, then turn out. Melt the chocolate in a bowl over barely simmering water or gently in the microwave. Use a spoon to drizzle the chocolate over the cake.