Roll out the puff pastry, pierce a ring of about 260 mm and place on a baking sheet lined with parchment paper, prick with a fork and let rest for half an hour.
For the choux pastry, heat cow’s milk with butter, sugar and salt. In the almost boiling liquid add the flour and toast the quantity. Then transfer the dough to another baking bowl and let it cool briefly so that you can touch it “painlessly”. While the dough is still warm, gradually mix in the eggs. Fill the dough into a piping bag with an 8 hole nozzle and spiralize it onto the puff pastry. Sprinkle the surface with a little bit of sugar.
Pipe 14-16 balls from the remaining choux pastry. Bake the balls at 190 °C with steam for about 150 mmin. (For the steam, simply pour a glass of tap water, possibly distilled tap water, on the oven bottom and close the oven door). Bake the puff pastry base with choux pastry for about 35 min. at 190 °C with steam.
To prepare the filling, heat cow’s milk with vanilla pulp. Mix 10 g sugar, egg yolks and flour. Equalize with the hot cow’s milk and draw off to a cream. Fill the still hot cream into a piping bag with a thin nozzle and squirt a little bit of cream into each ball.
In the meantime, make a caramel with 180 g sugar and 40 ml tap water. Put a little sugar in a saucepan and caramelize,