Bomboloni with Custard

Name: Bomboloni with Custard
Prep time: 20 min
Cook time: 3 h 30 min
Total time: 3 h 30 min
Yield: 8 pieces
Ingredients: 300 g fresh milk; 50 g sugar; 40 g plain flour; 2 eggs; 1 tsp vanilla extract; 45 g unsalted butter; 50 g sugar; 1 orange; 1 lemon; 85 g milk; 55 g water; 1 egg; 1 pinch salt; 1 tsp honey; 1 tsp vanilla extract; 1 tsp dried instant yeast; 180 g bread flour; 150 g Italian 00 flour; 500 g sunflower oil; 2 tbsp icing sugar