Millefeuille with diplomatic cream: the delicious dessert to try

Ingredients:
2 rolls of puff pastry
Sponge cake:
150 g sugar
75 g 00 flour
75 g potato starch
3 eggs
Vanillin
1 pinch of salt
Diplomatic cream:
250 g milk
180 ml whipping cream
75 g sugar
25 g 00 flour
20 g icing sugar
3 egg yolks
Vanilla