Pistachio cream madeleines

Name: Pistachio cream madeleines
Prep time: 15 min
Cook time: 24 h 35 min
Total time: 24 h 35 min
Yield: 24 portions
Ingredients: 50 g white sugar; 100 g shelled unsalted pistachio nuts; 100 g milk; 100 g white chocolate; 80 g unsalted butter; 30 g shelled unsalted pistachio nuts; 120 g unsalted butter; 2 eggs; 120 g caster sugar; 1 lemon; 1 tsp natural vanilla extract; 30 g milk; 10 g oil; 120 g plain flour; 1 ½ tsp baking powder; 1 pinch sea salt