Sweetpotato Panettone - North Carolina Sweetpotatoes

Ingredients

• A tall tin
• A paper panettone case or baking paper
• 500 g plain flour
• 80 g caster sugar
• 7 g instant yeast
• 250 g unsalted butter, softened
• 1 tsp salt
• 3 eggs
• 200 g mixed dried fruit
• 1 ½ tsp vanilla extract
• 5 tbsp warm water
• 3 tbsp milk
• 150 g sweetpotato purée (from one medium sweetpotato)
• 1 egg, whisked, for the egg wash
• grated zest from 1 lemon
• grated zest from 1 orange
• 3 tsp nutmeg
• 3 tbsp dark rum
• icing sugar, to serve