Briony's Nana Pat Kagekone recipe - The Great British Bake Off

Ingredients

• 345g strong white bread flour
• 35g golden caster sugar
• 2 tsp fast-action dried yeast
• 1 tsp salt
• 240g unsalted butter, chilled
• 125ml whole milk
• 50ml warm water
• 1 large egg
• ½ tsp vanilla extract
• 3 tbsp syrup from a jar of stem ginger
• 50g caster sugar
• 1 tsp ground ginger
• 2 egg yolks
• 20g cornflour
• 250ml whole milk
• 75g dried blueberries
• 75g icing sugar
• 1 tsp lemon juice