Puff pastry with anchovy fillets

Preparation:

Preparation: On a work surface, previously sprinkled with flour, roll out the puff pastry that you have taken out of the refrigerator at least 10 minutes before use and using a knife cut into squares. Arrange a drained anchovy fillet on each one and close it into a triangle, pressing the edges with your fingers. Brush the puff pastries with the beaten egg yolk and cook in the oven for about 10 minutes at 170 degrees. Serve them immediately hot.