First defrost the puff pastry and follow the rolling out instructions or you buy a fresh puff pastry.
Carefully take off the skin of the bavarian veal sausage and cut it halfway through the middle.
Cut two the pastry dough into two pieces. They should be big enough to cover the sausage. Coat the dough with some sweet mustard and place the sausage on it. Then fill the sausage with a little mustard, beat the egg and spread a little bit on the dough around the sausage. Start rolling the sausage in the dough, fold over the excess dough and brush the outside with the beaten egg too.
Now put the sausage for about 8 minutes in the oven preheated to 210 degrees celsius. Then reduce the heat to 200 degrees celsius and bake for another 8-10 minutes.
After taking out, let the sausages rest a little, cut them and serve with mustard.
tip: You can also use other types of sausages like "Wiener" , "Nürnberger bratwurst", "Austrian Käsekrainer", or if you like to make veggi fingerfood than take a tofu sausage...