Ingredients
* 3 tbsp black treacle
* 150ml milk
* 175g unsalted butter, diced
* 175g dark muscovado sugar
* 325g plain flour, sifted
* 1½ tsp bicarbonate of soda
* 3 tsp ground ginger
* 1 tsp ground cinnamon
* ¼ tsp grated nutmeg
* 2 eggs, lightly beaten
*For the fool:*
* 500g rhubarb, cut into 3-4cm lengths
* 150g caster sugar
* zest and juice of 2 oranges
* 250ml double cream